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URLhttps://www.nimh.nih.gov/health/statistics/mental-illness
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Meta TitleMental Illness - National Institute of Mental Health (NIMH)
Meta DescriptionAn overview of statistics for mental illnesses. Mental illnesses are common in the United States. One in six U.S. adults lives with a mental illness (43.4 million in 2015). Mental illnesses include many different conditions that vary in degree of severity, ranging from mild to moderate to severe.
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Mental illnesses are common in the United States and around the world. It is estimated that more than one in five U.S. adults live with a mental illness (59.3 million in 2022; 23.1% of the U.S. adult population). Mental illnesses include many different conditions that vary in degree of severity, ranging from mild to moderate to severe. Two broad categories can be used to describe these conditions: Any Mental Illness (AMI) and Serious Mental Illness (SMI). AMI encompasses all recognized mental illnesses. SMI is a smaller and more severe subset of AMI. Additional information on mental illnesses can be found on the NIMH Health Topics Pages . Definitions The data presented here are from the  2022 National Survey on Drug Use and Health (NSDUH)  by the  Substance Abuse and Mental Health Services Administration   (SAMHSA). For inclusion in NSDUH prevalence estimates, mental illnesses include those that are diagnosable currently or within the past year; of sufficient duration to meet diagnostic criteria specified within the 4th edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV); and, exclude developmental and substance use disorders. Any Mental Illness Any mental illness (AMI) is defined as a mental, behavioral, or emotional disorder. AMI can vary in impact, ranging from no impairment to mild, moderate, and even severe impairment (e.g., individuals with serious mental illness as defined below). Serious Mental Illness Serious mental illness (SMI) is defined as a mental, behavioral, or emotional disorder resulting in serious functional impairment, which substantially interferes with or limits one or more major life activities. The burden of mental illnesses is particularly concentrated among those who experience disability due to SMI. Prevalence of Any Mental Illness (AMI) Figure 1 shows the past year prevalence of AMI among U.S. adults. In 2022, there were an estimated 59.3 million adults aged 18 or older in the United States with AMI. This number represented 23.1% of all U.S. adults. The observed prevalence of AMI was higher among females (26.4%) than males (19.7%). Young adults aged 18-25 years had the highest prevalence of AMI (36.2%) compared to adults aged 26-49 years (29.4%) and aged 50 and older (13.9%). The prevalence of AMI was highest among the adults reporting two or more races (35.2%), followed by White adults (24.6%). The prevalence of AMI was lowest among Asian adults (16.8%). Figure 1 Past Year Prevalence of Any Mental Illness Among U.S. Adults (2022) Bar chart with 12 bars. Data Courtesy of SAMHSA The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 40. End of interactive chart. Past Year Prevalence of Any Mental Illness Among U.S. Adults (2022) Demographic Percent Overall 23.1 Sex Female 26.4 Male 19.7 Age 18-25 36.2 26-49 29.4 50+ 13.9 Race and Ethnicity Hispanic or Latino* 21.4 White 24.6 Black or African American 19.7 AI/AN 19,6 Asian 16.8 2 or More 35.2 *Persons of Hispanic origin may be of any race; all other racial/ethnic groups are non-Hispanic. AI/AN = American Indian / Alaskan Native **Note: Estimates for the Native Hawaiian / Other Pacific Islander group are not reported in the above figure due to low precision of data collection in 2022. Mental Health Treatment — AMI Figure 2 presents data on mental health treatment received within the past year by U.S. adults aged 18 or older with any mental illness (AMI). NSDUH defines mental health treatment as having received inpatient treatment/counseling or outpatient treatment/counseling, or having used prescription medication to help with mental health. In 2022, among the 59.3 million adults with AMI, 30.0 million (50.6%) received mental health treatment in the past year. More females with AMI (56.9%) received mental health treatment than males with AMI (41.6%). The percentage of young adults aged 18-25 years with AMI who received mental health treatment (49.1%) was slightly lower than adults with AMI aged 26-49 years (50.0%) and aged 50 and older (52.7%). Figure 2 Mental Health Treatment Received in Past Year Among U.S. Adults with Any Mental Illness (2022) Bar chart with 11 bars. Data Courtesy of SAMHSA The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 60. End of interactive chart. Mental Health Treatment Received in Past Year Among U.S. Adults with Any Mental Illness (2022) Demographic Percent Overall 50.6 Sex Female 56.9 Male 41.6 Age 18-25 49.1 26-49 50.0 50+ 52.7 Race and Ethnicity Hispanic or Latino* 39.6 White 56.1 Black or African American 37.9 Two or More Races 56.0 Asian 36.1 *Persons of Hispanic origin may be of any race; all other racial/ethnic groups are non-Hispanic. Note: Estimates for the Native Hawaiian / Other Pacific Islander group is not reported in the above figure due to low precision of data collection in 2022. Prevalence of Serious Mental Illness (SMI) Figure 3 shows the past year prevalence of SMI among U.S. adults. In 2022, there were an estimated 15.4 million adults aged 18 or older in the United States with SMI. This number represented 6.0% of all U.S. adults. The observed prevalence of SMI was higher among females (7.1%) than males (4.8%). Young adults aged 18-25 years had the highest prevalence of SMI (11.6%) compared to adults aged 26-49 years (7.6%) and aged 50 and older (3.0%). The prevalence of SMI was highest among adults reporting two or more races (11.8%), followed by American Indian / Alaskan Native (AI/AN) adults (7.3%). The prevalence of SMI was lowest among Native Hawaiian / Other Pacific Islander (NH/OPI) adults (3.5%). Figure 3 Past Year Prevalence of Serious Mental Illness Among U.S. Adults (2022) Bar chart with 13 bars. Data Courtesy of SAMHSA The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 16. End of interactive chart. Past Year Prevalence of Serious Mental Illness Among U.S. Adults (2022) Demographic Percent Overall 5.5 Sex Female 7.0 Male 4.0 Age 18-25 11.4 26-49 7.1 50+ 2.5 Race and Ethnicity Hispanic or Latino* 5.1 White 6.1 Black or African American 4.3 Asian 2.8 NH/OPI 6.3 AI/AN 9.3 2 or More 8.2 * Persons of Hispanic origin may be of any race; all other racial/ethnic groups are non-Hispanic. NH/OPI = Native Hawaiian / Other Pacific Islander | AI/AN = American Indian / Alaskan Native. Mental Health Treatment — SMI Figure 4 presents data on mental health treatment received within the past year by U.S. adults 18 or older with serious mental illness (SMI). The NSDUH defines mental health treatment as having received inpatient treatment/counseling or outpatient treatment/counseling or having used prescription medication to help with mental health. In 2022, among the 15.4 million adults with SMI, 10.2 million (66.7%) received mental health treatment in the past year. More females with SMI (71.4%) received mental health treatment than males with SMI (59.3%). The percentage of young adults aged 18-25 years with SMI who received mental health treatment (61.4%) was lower than adults with SMI aged 26-49 years (67.4%) and aged 50 and older (71.0%). Figure 4 Mental Health Treatment Received in Past Year Among U.S. Adults with Serious Mental Illness (2022) Bar chart with 10 bars. Data Courtesy of SAMHSA The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 80. End of interactive chart. Mental Health Treatment Received in Past Year Among U.S. Adults with Serious Mental Illness (2022) Demographic Percent Overall 65.4 Sex Female 67.6 Male 61.3 Age 18-25 57.9 26-49 67.0 50+ 71.0 Race and Ethnicity Hispanic or Latino* 58.6 White 68.6 Black or African American 62.3 Two or More Races 68.6 *Persons of Hispanic origin may be of any race; all other racial/ethnic groups are non-Hispanic. Note: Estimates for Asian, Native Hawaiian / Other Pacific Islander, and American Indian / Alaskan Native groups are not reported in the above figure due to low precision. Prevalence of Any Mental Disorder Among Adolescents Based on diagnostic interview data from National Comorbidity Survey Adolescent Supplement (NCS-A), Figure 5 shows lifetime prevalence of any mental disorder among U.S. adolescents aged 13-18. 1 An estimated 49.5% of adolescents had any mental disorder. Of adolescents with any mental disorder, an estimated 22.2% had severe impairment and/or distress. DSM-IV based criteria were used to determine severity level. Figure 5 Lifetime Prevalence of Any Mental Disorder Among Adolescents (2001-2004) Bar chart with 7 bars. Data from the National Comorbidity Survey Adolescent Supplement (NCS-A) The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 60. End of interactive chart. Lifetime Prevalence of Any Mental Disorder Among Adolescents (2001-2004) Demographic Percent Overall 49.5 With Severe Impairment 22.2 Sex Female 51.0 Male 48.1 Age 13-14 45.3 15-16 49.3 17-18 56.7 Data Sources Merikangas KR, He JP, Burstein M, Swanson SA, Avenevoli S, Cui L, Benjet C, Georgiades K, Swendsen J. Lifetime prevalence of mental disorders in U.S. adolescents: results from the National Comorbidity Survey Replication--Adolescent Supplement (NCS-A). J Am Acad Child Adolesc Psychiatry. 2010 Oct;49(10):980-9. PMID: 20855043  Substance Abuse and Mental Health Services Administration. (2023). Key substance use and mental health indicators in the United States: Results from the 2022 National Survey on Drug Use and Health (HHS Publication No. PEP23-07-01-006, NSDUH Series H-58). Rockville, MD: Center for Behavioral Health Statistics and Quality, Substance Abuse and Mental Health Services Administration. Retrieved from  https://www.samhsa.gov/data/report/2022-nsduh-annual-national-report  . Statistical Methods and Measurement Caveats National Survey on Drug Use and Health (NSDUH) Diagnostic Assessment: The NSDUH AMI and SMI estimates were generated from a prediction model created from clinical interview data collected on a subset of adult NSDUH respondents (4,912 total respondents between 2008 and 2012) who completed an adapted (past 12 month) version of the Structured Clinical Interview for DSM-IV-TR Axis I Disorders (Research Version, Non-patient Edition) (SCID-I/NP; First, Spitzer, Gibbon, & Williams, 2002), and was differentiated by level of functional impairment based on the Global Assessment of Functioning Scale (GAF; Endicott, Spitzer, Fleiss, & Cohen, 1976). The assessment included diagnostic modules assessing the patients for the signs of: mood disorders (e.g., major depressive episode, manic episode), anxiety disorders (e.g., panic disorder, generalized anxiety disorder, posttraumatic stress disorder), eating disorders (e.g., anorexia nervosa), impulse control disorders (e.g. intermittent explosive disorder, and adjustment disorder), and a psychotic symptoms screen. The assessment did not contain diagnostic modules assessing the following: adult attention deficit hyperactivity disorder (ADHD), autism spectrum disorders, schizophrenia or other psychotic disorders (although the assessment included a psychotic symptom screen). People who only have disorders that are not included in these diagnostic modules may not be adequately detected. However, there are known patterns of high comorbidities among mental disorders; these patterns increase the likelihood that people who meet AMI and/or SMI criteria were detected by the study, as they may also have one or more of the disorders assessed in the SCID-I/NP. Population: The entirety of NSDUH respondents for the AMI and SMI estimates were the civilian, non-institutionalized population aged 18 years old or older residing within the United States. The survey covered residents of households (persons living in houses/townhouses, apartments, condominiums; civilians living in housing on military bases, etc.) and persons in non-institutional group quarters (e.g., shelters, rooming/boarding houses, college dormitories, migratory workers' camps, and halfway houses). The survey did not cover persons who, for the entire year, had no fixed address (e.g., persons experiencing homelessness and/or transient persons not in shelters); were on active military duty; or who resided in institutional group quarters (e.g., correctional facilities and long-term hospitals). Some people in these excluded categories had AMI and/or SMI, but were not accounted for in the NSDUH AMI and/or SMI estimates. Data regarding sex of the respondent was assessed using male and female categories only. Survey Non-response: In 2022, 52.0% of the selected NSDUH sample of people 18 or older did not complete the interview. This rate of non-response is higher than in years before 2020. Please see the Background on the 2022 NSDUH and the COVID-19 Pandemic section below for more information. Reasons for non-response to interviewing include the following: refusal to participate (29.3%); respondent unavailable or never at home (18.2%); and other reasons such as physical/mental incompetence or language barriers (4.5%). People with mental illness may disproportionately fall into these non-response categories. While NSDUH weighting includes non-response adjustments to reduce bias, these adjustments may not fully account for differential non-response by mental illness status. Data Suppression: For some groups, data are not reported due to low precision. Data may be suppressed in the above charts if the data do not meet acceptable ranges for prevalence estimates, standard error estimates, and sample size. Background on the 2022 NSDUH and the COVID-19 Pandemic: Data collection methods for the 2022 NSDUH changed in several ways because of the COVID-19 pandemic: the 2022 NSDUH continued the use of multimode data collection procedures (both in-person and virtual data collection) that were first implemented in the fourth quarter of the 2020 NSDUH. Overall, 40.7% of interviews were completed via the web, and 59.3% were completed in person. In 2022, the weighted response rates for household screening and for interviewing were 25.5% and 47.4%, respectively, for an overall response rate of 12.1% for people aged 12 or older. Given the use of multimode data collection procedures throughout the entirety of the collection year and the rate of non-response, comparison of estimates from the 2022 NSDUH with those from prior years must be made with caution. Please see the  2022 National Survey on Drug Use and Health Methodological Summary and Definitions report  for further information on how these data were collected and calculated. National Comorbidity Survey Adolescent Supplement (NCS-A) Diagnostic Assessment and Population: The NCS-A was carried out under a cooperative agreement sponsored by NIMH to meet a request from Congress to provide national data on the prevalence and correlates of mental disorders among U.S. youth. The NCS-A was a nationally representative, face-to-face survey of 10,123 adolescents aged 13 to 18 years in the continental United States. The survey was based on a dual-frame design that included 904 adolescent residents of the households that participated in the adult U.S. National Comorbidity Survey Replication and 9,244 adolescent students selected from a nationally representative sample of 320 schools. The survey was fielded between February 2001 and January 2004. DSM-IV mental disorders were assessed using a modified version of the fully structured World Health Organization Composite International Diagnostic Interview. Survey Non-response: The overall adolescent non-response rate was 24.4%. This is made up of non-response rates of 14.1% in the household sample, 18.2% in the un-blinded school sample, and 77.7% in the blinded school sample. Non-response was largely due to refusal (21.3%), which in the household and un-blinded school samples came largely from parents rather than adolescents (72.3% and 81.0%, respectively). The refusals in the blinded school sample, in comparison, came almost entirely (98.1%) from parents failing to return the signed consent postcard. For more information, see  PMID: 19507169   and the NIMH NCS-A study page . Last Updated: September 2024
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[Prevalence of Any Mental Disorder Among Adolescents](https://www.nimh.nih.gov/health/statistics/mental-illness#part_2632) - [Data Sources](https://www.nimh.nih.gov/health/statistics/mental-illness#part_2555) # Mental Illness Mental illnesses are common in the United States and around the world. It is estimated that more than one in five U.S. adults live with a mental illness (59.3 million in 2022; 23.1% of the U.S. adult population). Mental illnesses include many different conditions that vary in degree of severity, ranging from mild to moderate to severe. Two broad categories can be used to describe these conditions: Any Mental Illness (AMI) and Serious Mental Illness (SMI). AMI encompasses all recognized mental illnesses. SMI is a smaller and more severe subset of AMI. Additional information on mental illnesses can be found on the [NIMH Health Topics Pages](https://www.nimh.nih.gov/health/topics). ## Definitions The data presented here are from the [2022 National Survey on Drug Use and Health (NSDUH)](https://www.samhsa.gov/data/release/2022-national-survey-drug-use-and-health-nsduh-releases) by the [Substance Abuse and Mental Health Services Administration](http://www.samhsa.gov/) (SAMHSA). For inclusion in NSDUH prevalence estimates, mental illnesses include those that are diagnosable currently or within the past year; of sufficient duration to meet diagnostic criteria specified within the 4th edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV); and, exclude developmental and substance use disorders. ### Any Mental Illness - **Any mental illness (AMI)** is defined as a mental, behavioral, or emotional disorder. AMI can vary in impact, ranging from no impairment to mild, moderate, and even severe impairment (e.g., individuals with serious mental illness as defined below). ### Serious Mental Illness - **Serious mental illness (SMI)** is defined as a mental, behavioral, or emotional disorder resulting in serious functional impairment, which substantially interferes with or limits one or more major life activities. The burden of mental illnesses is particularly concentrated among those who experience disability due to SMI. ## Prevalence of Any Mental Illness (AMI) - Figure 1 shows the past year prevalence of AMI among U.S. adults. - In 2022, there were an estimated 59.3 million adults aged 18 or older in the United States with AMI. This number represented 23.1% of all U.S. adults. - The observed prevalence of AMI was higher among females (26.4%) than males (19.7%). - Young adults aged 18-25 years had the highest prevalence of AMI (36.2%) compared to adults aged 26-49 years (29.4%) and aged 50 and older (13.9%). - The prevalence of AMI was highest among the adults reporting two or more races (35.2%), followed by White adults (24.6%). The prevalence of AMI was lowest among Asian adults (16.8%). #### Figure 1 Past Year Prevalence of Any Mental Illness Among U.S. Adults (2022) Bar chart with 12 bars. Data Courtesy of SAMHSA View as data table, Past Year Prevalence of Any Mental Illness Among U.S. Adults (2022) The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 40. Created with Highcharts 9.0.1 Percent Past Year Prevalence of Any Mental Illness Among U.S. Adults (2022) Data Courtesy of SAMHSA 23\.1 ​ 23\.1 26\.4 ​ 26\.4 19\.7 ​ 19\.7 36\.2 ​ 36\.2 29\.4 ​ 29\.4 13\.9 ​ 13\.9 21\.4 ​ 21\.4 24\.6 ​ 24\.6 19\.7 ​ 19\.7 19\.6 ​ 19\.6 16\.8 ​ 16\.8 35\.2 ​ 35\.2 Overall Female Sex Male 18-25 Age 26-49 50+ Hispan… Race and Ethnicity White Black … AI/AN Asian 2 or M… 0 5 10 15 20 25 30 35 40 End of interactive chart. | Demographic | Percent | | |---|---|---| | Overall | 23\.1 | | | Sex | Female | 26\.4 | | Male | 19\.7 | | | Age | 18-25 | 36\.2 | | 26-49 | 29\.4 | | | 50+ | 13\.9 | | | Race and Ethnicity | Hispanic or Latino\* | 21\.4 | | White | 24\.6 | | | Black or African American | 19\.7 | | | AI/AN | 19,6 | | | Asian | 16\.8 | | | 2 or More | 35\.2 | | \*Persons of Hispanic origin may be of any race; all other racial/ethnic groups are non-Hispanic. AI/AN = American Indian / Alaskan Native \*\*Note: Estimates for the Native Hawaiian / Other Pacific Islander group are not reported in the above figure due to low precision of data collection in 2022. ## Mental Health Treatment — AMI - Figure 2 presents data on mental health treatment received within the past year by U.S. adults aged 18 or older with any mental illness (AMI). NSDUH defines mental health treatment as having received inpatient treatment/counseling or outpatient treatment/counseling, or having used prescription medication to help with mental health. - In 2022, among the 59.3 million adults with AMI, 30.0 million (50.6%) received mental health treatment in the past year. - More females with AMI (56.9%) received mental health treatment than males with AMI (41.6%). - The percentage of young adults aged 18-25 years with AMI who received mental health treatment (49.1%) was slightly lower than adults with AMI aged 26-49 years (50.0%) and aged 50 and older (52.7%). #### Figure 2 Mental Health Treatment Received in Past Year Among U.S. Adults with Any Mental Illness (2022) Bar chart with 11 bars. Data Courtesy of SAMHSA View as data table, Mental Health Treatment Received in Past Year Among U.S. Adults with Any Mental Illness (2022) The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 60. Created with Highcharts 9.0.1 Percent Mental Health Treatment Received in Past Year Among U.S. Adults ​ with ​ Any Mental Illness (2022) Data Courtesy of SAMHSA 50\.6 ​ 50\.6 56\.9 ​ 56\.9 41\.6 ​ 41\.6 49\.1 ​ 49\.1 50\.0 ​ 50\.0 52\.7 ​ 52\.7 39\.6 ​ 39\.6 56\.1 ​ 56\.1 37\.9 ​ 37\.9 56\.0 ​ 56\.0 36\.1 ​ 36\.1 Overall Female Sex Male 18-25 Age 26-49 50+ Hispani… Race and Ethnicity White Black o… Two or … Asian 0 10 20 30 40 50 60 End of interactive chart. | Demographic | Percent | | |---|---|---| | Overall | 50\.6 | | | Sex | Female | 56\.9 | | Male | 41\.6 | | | Age | 18-25 | 49\.1 | | 26-49 | 50\.0 | | | 50+ | 52\.7 | | | Race and Ethnicity | Hispanic or Latino\* | 39\.6 | | White | 56\.1 | | | Black or African American | 37\.9 | | | Two or More Races | 56\.0 | | | Asian | 36\.1 | | \*Persons of Hispanic origin may be of any race; all other racial/ethnic groups are non-Hispanic. Note: Estimates for the Native Hawaiian / Other Pacific Islander group is not reported in the above figure due to low precision of data collection in 2022. ## Prevalence of Serious Mental Illness (SMI) - Figure 3 shows the past year prevalence of SMI among U.S. adults. - In 2022, there were an estimated 15.4 million adults aged 18 or older in the United States with SMI. This number represented 6.0% of all U.S. adults. - The observed prevalence of SMI was higher among females (7.1%) than males (4.8%). - Young adults aged 18-25 years had the highest prevalence of SMI (11.6%) compared to adults aged 26-49 years (7.6%) and aged 50 and older (3.0%). - The prevalence of SMI was highest among adults reporting two or more races (11.8%), followed by American Indian / Alaskan Native (AI/AN) adults (7.3%). The prevalence of SMI was lowest among Native Hawaiian / Other Pacific Islander (NH/OPI) adults (3.5%). #### Figure 3 Past Year Prevalence of Serious Mental Illness Among U.S. Adults (2022) Bar chart with 13 bars. Data Courtesy of SAMHSA View as data table, Past Year Prevalence of Serious Mental Illness Among U.S. Adults (2022) The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 16. Created with Highcharts 9.0.1 Percent Past Year Prevalence of Serious Mental Illness Among U.S. Adults ​ (2022) Data Courtesy of SAMHSA 6\.0 ​ 6\.0 7\.1 ​ 7\.1 4\.8 ​ 4\.8 11\.6 ​ 11\.6 7\.6 ​ 7\.6 3\.0 ​ 3\.0 5\.3 ​ 5\.3 6\.5 ​ 6\.5 4\.7 ​ 4\.7 4\.1 ​ 4\.1 3\.5 ​ 3\.5 7\.3 ​ 7\.3 11\.8 ​ 11\.8 Overall Female Sex Male 18-25 Age 26-49 50+ Hispa… Race and Ethnicity White Black … Asian NH/OPI AI/AN 2 or … 0 2 4 6 8 10 12 14 16 End of interactive chart. | Demographic | Percent | | |---|---|---| | Overall | 5\.5 | | | Sex | Female | 7\.0 | | Male | 4\.0 | | | Age | 18-25 | 11\.4 | | 26-49 | 7\.1 | | | 50+ | 2\.5 | | | Race and Ethnicity | Hispanic or Latino\* | 5\.1 | | White | 6\.1 | | | Black or African American | 4\.3 | | | Asian | 2\.8 | | | NH/OPI | 6\.3 | | | AI/AN | 9\.3 | | | 2 or More | 8\.2 | | \* Persons of Hispanic origin may be of any race; all other racial/ethnic groups are non-Hispanic. NH/OPI = Native Hawaiian / Other Pacific Islander \| AI/AN = American Indian / Alaskan Native. ## Mental Health Treatment — SMI - Figure 4 presents data on mental health treatment received within the past year by U.S. adults 18 or older with serious mental illness (SMI). The NSDUH defines mental health treatment as having received inpatient treatment/counseling or outpatient treatment/counseling or having used prescription medication to help with mental health. - In 2022, among the 15.4 million adults with SMI, 10.2 million (66.7%) received mental health treatment in the past year. - More females with SMI (71.4%) received mental health treatment than males with SMI (59.3%). - The percentage of young adults aged 18-25 years with SMI who received mental health treatment (61.4%) was lower than adults with SMI aged 26-49 years (67.4%) and aged 50 and older (71.0%). #### Figure 4 Mental Health Treatment Received in Past Year Among U.S. Adults with Serious Mental Illness (2022) Bar chart with 10 bars. Data Courtesy of SAMHSA View as data table, Mental Health Treatment Received in Past Year Among U.S. Adults with Serious Mental Illness (2022) The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 80. Created with Highcharts 9.0.1 Percent Mental Health Treatment Received in Past Year Among U.S. Adults ​ with ​ Serious Mental Illness (2022) Data Courtesy of SAMHSA 66\.7 ​ 66\.7 71\.4 ​ 71\.4 59\.3 ​ 59\.3 61\.4 ​ 61\.4 67\.4 ​ 67\.4 71\.0 ​ 71\.0 58\.4 ​ 58\.4 71\.4 ​ 71\.4 52\.3 ​ 52\.3 73\.9 ​ 73\.9 Overall Female Sex Male 18-25 Age 26-49 50+ Hispanic… Race and Ethnicity White Black or … Two or … 0 10 20 30 40 50 60 70 80 End of interactive chart. | Demographic | Percent | | |---|---|---| | Overall | 65\.4 | | | Sex | Female | 67\.6 | | Male | 61\.3 | | | Age | 18-25 | 57\.9 | | 26-49 | 67\.0 | | | 50+ | 71\.0 | | | Race and Ethnicity | Hispanic or Latino\* | 58\.6 | | White | 68\.6 | | | Black or African American | 62\.3 | | | Two or More Races | 68\.6 | | \*Persons of Hispanic origin may be of any race; all other racial/ethnic groups are non-Hispanic. Note: Estimates for Asian, Native Hawaiian / Other Pacific Islander, and American Indian / Alaskan Native groups are not reported in the above figure due to low precision. ## Prevalence of Any Mental Disorder Among Adolescents - Based on diagnostic interview data from National Comorbidity Survey Adolescent Supplement (NCS-A), Figure 5 shows lifetime prevalence of any mental disorder among U.S. adolescents aged 13-18.1 - An estimated 49.5% of adolescents had any mental disorder. - Of adolescents with any mental disorder, an estimated 22.2% had severe impairment and/or distress. DSM-IV based criteria were used to determine severity level. #### Figure 5 Lifetime Prevalence of Any Mental Disorder Among Adolescents (2001-2004) Bar chart with 7 bars. Data from the National Comorbidity Survey Adolescent Supplement (NCS-A) View as data table, Lifetime Prevalence of Any Mental Disorder Among Adolescents (2001-2004) The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 60. Created with Highcharts 9.0.1 Percent Lifetime Prevalence of Any Mental Disorder Among Adolescents ​ (2001-2004) Data from the National Comorbidity Survey Adolescent Supplement (NCS-A) 49\.5 ​ 49\.5 22\.2 ​ 22\.2 51\.0 ​ 51\.0 48\.1 ​ 48\.1 45\.3 ​ 45\.3 49\.3 ​ 49\.3 56\.7 ​ 56\.7 Overall With Severe I… Female Sex Male 13-14 Age 15-16 17-18 0 10 20 30 40 50 60 End of interactive chart. | Demographic | Percent | | |---|---|---| | Overall | 49\.5 | | | With Severe Impairment | 22\.2 | | | Sex | Female | 51\.0 | | Male | 48\.1 | | | Age | 13-14 | 45\.3 | | 15-16 | 49\.3 | | | 17-18 | 56\.7 | | ## Data Sources 1. Merikangas KR, He JP, Burstein M, Swanson SA, Avenevoli S, Cui L, Benjet C, Georgiades K, Swendsen J. Lifetime prevalence of mental disorders in U.S. adolescents: results from the National Comorbidity Survey Replication--Adolescent Supplement (NCS-A). *J Am Acad Child Adolesc Psychiatry.* 2010 Oct;49(10):980-9. [PMID: 20855043](http://www.ncbi.nlm.nih.gov/pubmed/20855043/) 2. Substance Abuse and Mental Health Services Administration. (2023). Key substance use and mental health indicators in the United States: Results from the 2022 National Survey on Drug Use and Health (HHS Publication No. PEP23-07-01-006, NSDUH Series H-58). Rockville, MD: Center for Behavioral Health Statistics and Quality, Substance Abuse and Mental Health Services Administration. Retrieved from <https://www.samhsa.gov/data/report/2022-nsduh-annual-national-report>. ### Statistical Methods and Measurement Caveats #### National Survey on Drug Use and Health (NSDUH) Diagnostic Assessment: - The NSDUH AMI and SMI estimates were generated from a prediction model created from clinical interview data collected on a subset of adult NSDUH respondents (4,912 total respondents between 2008 and 2012) who completed an adapted (past 12 month) version of the Structured Clinical Interview for DSM-IV-TR Axis I Disorders (Research Version, Non-patient Edition) (SCID-I/NP; First, Spitzer, Gibbon, & Williams, 2002), and was differentiated by level of functional impairment based on the Global Assessment of Functioning Scale (GAF; Endicott, Spitzer, Fleiss, & Cohen, 1976). - The assessment included diagnostic modules assessing the patients for the signs of: mood disorders (e.g., major depressive episode, manic episode), anxiety disorders (e.g., panic disorder, generalized anxiety disorder, posttraumatic stress disorder), eating disorders (e.g., anorexia nervosa), impulse control disorders (e.g. intermittent explosive disorder, and adjustment disorder), and a psychotic symptoms screen. - The assessment did not contain diagnostic modules assessing the following: adult attention deficit hyperactivity disorder (ADHD), autism spectrum disorders, schizophrenia or other psychotic disorders (although the assessment included a psychotic symptom screen). - People who only have disorders that are not included in these diagnostic modules may not be adequately detected. However, there are known patterns of high comorbidities among mental disorders; these patterns increase the likelihood that people who meet AMI and/or SMI criteria were detected by the study, as they may also have one or more of the disorders assessed in the SCID-I/NP. Population: - The entirety of NSDUH respondents for the AMI and SMI estimates were the civilian, non-institutionalized population aged 18 years old or older residing within the United States. - The survey covered residents of households (persons living in houses/townhouses, apartments, condominiums; civilians living in housing on military bases, etc.) and persons in non-institutional group quarters (e.g., shelters, rooming/boarding houses, college dormitories, migratory workers' camps, and halfway houses). - The survey did not cover persons who, for the entire year, had no fixed address (e.g., persons experiencing homelessness and/or transient persons not in shelters); were on active military duty; or who resided in institutional group quarters (e.g., correctional facilities and long-term hospitals). - Some people in these excluded categories had AMI and/or SMI, but were not accounted for in the NSDUH AMI and/or SMI estimates. - Data regarding sex of the respondent was assessed using male and female categories only. Survey Non-response: - In 2022, 52.0% of the selected NSDUH sample of people 18 or older did not complete the interview. This rate of non-response is higher than in years before 2020. Please see the Background on the 2022 NSDUH and the COVID-19 Pandemic section below for more information. - Reasons for non-response to interviewing include the following: refusal to participate (29.3%); respondent unavailable or never at home (18.2%); and other reasons such as physical/mental incompetence or language barriers (4.5%). - People with mental illness may disproportionately fall into these non-response categories. While NSDUH weighting includes non-response adjustments to reduce bias, these adjustments may not fully account for differential non-response by mental illness status. Data Suppression: - For some groups, data are not reported due to low precision. Data may be suppressed in the above charts if the data do not meet acceptable ranges for prevalence estimates, standard error estimates, and sample size. Background on the 2022 NSDUH and the COVID-19 Pandemic: - Data collection methods for the 2022 NSDUH changed in several ways because of the COVID-19 pandemic: the 2022 NSDUH continued the use of multimode data collection procedures (both in-person and virtual data collection) that were first implemented in the fourth quarter of the 2020 NSDUH. Overall, 40.7% of interviews were completed via the web, and 59.3% were completed in person. In 2022, the weighted response rates for household screening and for interviewing were 25.5% and 47.4%, respectively, for an overall response rate of 12.1% for people aged 12 or older. - Given the use of multimode data collection procedures throughout the entirety of the collection year and the rate of non-response, comparison of estimates from the 2022 NSDUH with those from prior years must be made with caution. Please see the [2022 National Survey on Drug Use and Health Methodological Summary and Definitions report](https://www.samhsa.gov/data/report/2022-methodological-summary-and-definitions) for further information on how these data were collected and calculated. #### National Comorbidity Survey Adolescent Supplement (NCS-A) Diagnostic Assessment and Population: - The NCS-A was carried out under a cooperative agreement sponsored by NIMH to meet a request from Congress to provide national data on the prevalence and correlates of mental disorders among U.S. youth. The NCS-A was a nationally representative, face-to-face survey of 10,123 adolescents aged 13 to 18 years in the continental United States. The survey was based on a dual-frame design that included 904 adolescent residents of the households that participated in the adult U.S. National Comorbidity Survey Replication and 9,244 adolescent students selected from a nationally representative sample of 320 schools. The survey was fielded between February 2001 and January 2004. DSM-IV mental disorders were assessed using a modified version of the fully structured World Health Organization Composite International Diagnostic Interview. Survey Non-response: - The overall adolescent non-response rate was 24.4%. This is made up of non-response rates of 14.1% in the household sample, 18.2% in the un-blinded school sample, and 77.7% in the blinded school sample. Non-response was largely due to refusal (21.3%), which in the household and un-blinded school samples came largely from parents rather than adolescents (72.3% and 81.0%, respectively). The refusals in the blinded school sample, in comparison, came almost entirely (98.1%) from parents failing to return the signed consent postcard. For more information, see [PMID: 19507169](https://www.ncbi.nlm.nih.gov/pubmed/19507169) and the [NIMH NCS-A study page](https://www.nimh.nih.gov/news/science-updates/2010/national-survey-confirms-that-youth-are-disproportionately-affected-by-mental-disorders). Last Updated: September 2024 ## Disclaimer We link to external websites for informational purposes only, but we do not endorse or guarantee their accuracy. Once you leave our site, you will be subject to the new website’s privacy policy. 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Mental illnesses are common in the United States and around the world. It is estimated that more than one in five U.S. adults live with a mental illness (59.3 million in 2022; 23.1% of the U.S. adult population). Mental illnesses include many different conditions that vary in degree of severity, ranging from mild to moderate to severe. Two broad categories can be used to describe these conditions: Any Mental Illness (AMI) and Serious Mental Illness (SMI). AMI encompasses all recognized mental illnesses. SMI is a smaller and more severe subset of AMI. Additional information on mental illnesses can be found on the [NIMH Health Topics Pages](https://www.nimh.nih.gov/health/topics). ## Definitions The data presented here are from the [2022 National Survey on Drug Use and Health (NSDUH)](https://www.samhsa.gov/data/release/2022-national-survey-drug-use-and-health-nsduh-releases) by the [Substance Abuse and Mental Health Services Administration](http://www.samhsa.gov/) (SAMHSA). For inclusion in NSDUH prevalence estimates, mental illnesses include those that are diagnosable currently or within the past year; of sufficient duration to meet diagnostic criteria specified within the 4th edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV); and, exclude developmental and substance use disorders. ### Any Mental Illness - **Any mental illness (AMI)** is defined as a mental, behavioral, or emotional disorder. AMI can vary in impact, ranging from no impairment to mild, moderate, and even severe impairment (e.g., individuals with serious mental illness as defined below). ### Serious Mental Illness - **Serious mental illness (SMI)** is defined as a mental, behavioral, or emotional disorder resulting in serious functional impairment, which substantially interferes with or limits one or more major life activities. The burden of mental illnesses is particularly concentrated among those who experience disability due to SMI. ## Prevalence of Any Mental Illness (AMI) - Figure 1 shows the past year prevalence of AMI among U.S. adults. - In 2022, there were an estimated 59.3 million adults aged 18 or older in the United States with AMI. This number represented 23.1% of all U.S. adults. - The observed prevalence of AMI was higher among females (26.4%) than males (19.7%). - Young adults aged 18-25 years had the highest prevalence of AMI (36.2%) compared to adults aged 26-49 years (29.4%) and aged 50 and older (13.9%). - The prevalence of AMI was highest among the adults reporting two or more races (35.2%), followed by White adults (24.6%). The prevalence of AMI was lowest among Asian adults (16.8%). #### Figure 1 Past Year Prevalence of Any Mental Illness Among U.S. Adults (2022) Bar chart with 12 bars. Data Courtesy of SAMHSA The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 40. End of interactive chart. | Demographic | Percent | | |---|---|---| | Overall | 23\.1 | | | Sex | Female | 26\.4 | | Male | 19\.7 | | | Age | 18-25 | 36\.2 | | 26-49 | 29\.4 | | | 50+ | 13\.9 | | | Race and Ethnicity | Hispanic or Latino\* | 21\.4 | | White | 24\.6 | | | Black or African American | 19\.7 | | | AI/AN | 19,6 | | | Asian | 16\.8 | | | 2 or More | 35\.2 | | \*Persons of Hispanic origin may be of any race; all other racial/ethnic groups are non-Hispanic. AI/AN = American Indian / Alaskan Native \*\*Note: Estimates for the Native Hawaiian / Other Pacific Islander group are not reported in the above figure due to low precision of data collection in 2022. ## Mental Health Treatment — AMI - Figure 2 presents data on mental health treatment received within the past year by U.S. adults aged 18 or older with any mental illness (AMI). NSDUH defines mental health treatment as having received inpatient treatment/counseling or outpatient treatment/counseling, or having used prescription medication to help with mental health. - In 2022, among the 59.3 million adults with AMI, 30.0 million (50.6%) received mental health treatment in the past year. - More females with AMI (56.9%) received mental health treatment than males with AMI (41.6%). - The percentage of young adults aged 18-25 years with AMI who received mental health treatment (49.1%) was slightly lower than adults with AMI aged 26-49 years (50.0%) and aged 50 and older (52.7%). #### Figure 2 Mental Health Treatment Received in Past Year Among U.S. Adults with Any Mental Illness (2022) Bar chart with 11 bars. Data Courtesy of SAMHSA The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 60. End of interactive chart. | Demographic | Percent | | |---|---|---| | Overall | 50\.6 | | | Sex | Female | 56\.9 | | Male | 41\.6 | | | Age | 18-25 | 49\.1 | | 26-49 | 50\.0 | | | 50+ | 52\.7 | | | Race and Ethnicity | Hispanic or Latino\* | 39\.6 | | White | 56\.1 | | | Black or African American | 37\.9 | | | Two or More Races | 56\.0 | | | Asian | 36\.1 | | \*Persons of Hispanic origin may be of any race; all other racial/ethnic groups are non-Hispanic. Note: Estimates for the Native Hawaiian / Other Pacific Islander group is not reported in the above figure due to low precision of data collection in 2022. ## Prevalence of Serious Mental Illness (SMI) - Figure 3 shows the past year prevalence of SMI among U.S. adults. - In 2022, there were an estimated 15.4 million adults aged 18 or older in the United States with SMI. This number represented 6.0% of all U.S. adults. - The observed prevalence of SMI was higher among females (7.1%) than males (4.8%). - Young adults aged 18-25 years had the highest prevalence of SMI (11.6%) compared to adults aged 26-49 years (7.6%) and aged 50 and older (3.0%). - The prevalence of SMI was highest among adults reporting two or more races (11.8%), followed by American Indian / Alaskan Native (AI/AN) adults (7.3%). The prevalence of SMI was lowest among Native Hawaiian / Other Pacific Islander (NH/OPI) adults (3.5%). #### Figure 3 Past Year Prevalence of Serious Mental Illness Among U.S. Adults (2022) Bar chart with 13 bars. Data Courtesy of SAMHSA The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 16. End of interactive chart. | Demographic | Percent | | |---|---|---| | Overall | 5\.5 | | | Sex | Female | 7\.0 | | Male | 4\.0 | | | Age | 18-25 | 11\.4 | | 26-49 | 7\.1 | | | 50+ | 2\.5 | | | Race and Ethnicity | Hispanic or Latino\* | 5\.1 | | White | 6\.1 | | | Black or African American | 4\.3 | | | Asian | 2\.8 | | | NH/OPI | 6\.3 | | | AI/AN | 9\.3 | | | 2 or More | 8\.2 | | \* Persons of Hispanic origin may be of any race; all other racial/ethnic groups are non-Hispanic. NH/OPI = Native Hawaiian / Other Pacific Islander \| AI/AN = American Indian / Alaskan Native. ## Mental Health Treatment — SMI - Figure 4 presents data on mental health treatment received within the past year by U.S. adults 18 or older with serious mental illness (SMI). The NSDUH defines mental health treatment as having received inpatient treatment/counseling or outpatient treatment/counseling or having used prescription medication to help with mental health. - In 2022, among the 15.4 million adults with SMI, 10.2 million (66.7%) received mental health treatment in the past year. - More females with SMI (71.4%) received mental health treatment than males with SMI (59.3%). - The percentage of young adults aged 18-25 years with SMI who received mental health treatment (61.4%) was lower than adults with SMI aged 26-49 years (67.4%) and aged 50 and older (71.0%). #### Figure 4 Mental Health Treatment Received in Past Year Among U.S. Adults with Serious Mental Illness (2022) Bar chart with 10 bars. Data Courtesy of SAMHSA The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 80. End of interactive chart. | Demographic | Percent | | |---|---|---| | Overall | 65\.4 | | | Sex | Female | 67\.6 | | Male | 61\.3 | | | Age | 18-25 | 57\.9 | | 26-49 | 67\.0 | | | 50+ | 71\.0 | | | Race and Ethnicity | Hispanic or Latino\* | 58\.6 | | White | 68\.6 | | | Black or African American | 62\.3 | | | Two or More Races | 68\.6 | | \*Persons of Hispanic origin may be of any race; all other racial/ethnic groups are non-Hispanic. Note: Estimates for Asian, Native Hawaiian / Other Pacific Islander, and American Indian / Alaskan Native groups are not reported in the above figure due to low precision. ## Prevalence of Any Mental Disorder Among Adolescents - Based on diagnostic interview data from National Comorbidity Survey Adolescent Supplement (NCS-A), Figure 5 shows lifetime prevalence of any mental disorder among U.S. adolescents aged 13-18.1 - An estimated 49.5% of adolescents had any mental disorder. - Of adolescents with any mental disorder, an estimated 22.2% had severe impairment and/or distress. DSM-IV based criteria were used to determine severity level. #### Figure 5 Lifetime Prevalence of Any Mental Disorder Among Adolescents (2001-2004) Bar chart with 7 bars. Data from the National Comorbidity Survey Adolescent Supplement (NCS-A) The chart has 1 X axis displaying categories. The chart has 1 Y axis displaying Percent. Range: 0 to 60. End of interactive chart. | Demographic | Percent | | |---|---|---| | Overall | 49\.5 | | | With Severe Impairment | 22\.2 | | | Sex | Female | 51\.0 | | Male | 48\.1 | | | Age | 13-14 | 45\.3 | | 15-16 | 49\.3 | | | 17-18 | 56\.7 | | ## Data Sources 1. Merikangas KR, He JP, Burstein M, Swanson SA, Avenevoli S, Cui L, Benjet C, Georgiades K, Swendsen J. Lifetime prevalence of mental disorders in U.S. adolescents: results from the National Comorbidity Survey Replication--Adolescent Supplement (NCS-A). *J Am Acad Child Adolesc Psychiatry.* 2010 Oct;49(10):980-9. [PMID: 20855043](http://www.ncbi.nlm.nih.gov/pubmed/20855043/) 2. Substance Abuse and Mental Health Services Administration. (2023). Key substance use and mental health indicators in the United States: Results from the 2022 National Survey on Drug Use and Health (HHS Publication No. PEP23-07-01-006, NSDUH Series H-58). Rockville, MD: Center for Behavioral Health Statistics and Quality, Substance Abuse and Mental Health Services Administration. Retrieved from <https://www.samhsa.gov/data/report/2022-nsduh-annual-national-report>. ### Statistical Methods and Measurement Caveats #### National Survey on Drug Use and Health (NSDUH) Diagnostic Assessment: - The NSDUH AMI and SMI estimates were generated from a prediction model created from clinical interview data collected on a subset of adult NSDUH respondents (4,912 total respondents between 2008 and 2012) who completed an adapted (past 12 month) version of the Structured Clinical Interview for DSM-IV-TR Axis I Disorders (Research Version, Non-patient Edition) (SCID-I/NP; First, Spitzer, Gibbon, & Williams, 2002), and was differentiated by level of functional impairment based on the Global Assessment of Functioning Scale (GAF; Endicott, Spitzer, Fleiss, & Cohen, 1976). - The assessment included diagnostic modules assessing the patients for the signs of: mood disorders (e.g., major depressive episode, manic episode), anxiety disorders (e.g., panic disorder, generalized anxiety disorder, posttraumatic stress disorder), eating disorders (e.g., anorexia nervosa), impulse control disorders (e.g. intermittent explosive disorder, and adjustment disorder), and a psychotic symptoms screen. - The assessment did not contain diagnostic modules assessing the following: adult attention deficit hyperactivity disorder (ADHD), autism spectrum disorders, schizophrenia or other psychotic disorders (although the assessment included a psychotic symptom screen). - People who only have disorders that are not included in these diagnostic modules may not be adequately detected. However, there are known patterns of high comorbidities among mental disorders; these patterns increase the likelihood that people who meet AMI and/or SMI criteria were detected by the study, as they may also have one or more of the disorders assessed in the SCID-I/NP. Population: - The entirety of NSDUH respondents for the AMI and SMI estimates were the civilian, non-institutionalized population aged 18 years old or older residing within the United States. - The survey covered residents of households (persons living in houses/townhouses, apartments, condominiums; civilians living in housing on military bases, etc.) and persons in non-institutional group quarters (e.g., shelters, rooming/boarding houses, college dormitories, migratory workers' camps, and halfway houses). - The survey did not cover persons who, for the entire year, had no fixed address (e.g., persons experiencing homelessness and/or transient persons not in shelters); were on active military duty; or who resided in institutional group quarters (e.g., correctional facilities and long-term hospitals). - Some people in these excluded categories had AMI and/or SMI, but were not accounted for in the NSDUH AMI and/or SMI estimates. - Data regarding sex of the respondent was assessed using male and female categories only. Survey Non-response: - In 2022, 52.0% of the selected NSDUH sample of people 18 or older did not complete the interview. This rate of non-response is higher than in years before 2020. Please see the Background on the 2022 NSDUH and the COVID-19 Pandemic section below for more information. - Reasons for non-response to interviewing include the following: refusal to participate (29.3%); respondent unavailable or never at home (18.2%); and other reasons such as physical/mental incompetence or language barriers (4.5%). - People with mental illness may disproportionately fall into these non-response categories. While NSDUH weighting includes non-response adjustments to reduce bias, these adjustments may not fully account for differential non-response by mental illness status. Data Suppression: - For some groups, data are not reported due to low precision. Data may be suppressed in the above charts if the data do not meet acceptable ranges for prevalence estimates, standard error estimates, and sample size. Background on the 2022 NSDUH and the COVID-19 Pandemic: - Data collection methods for the 2022 NSDUH changed in several ways because of the COVID-19 pandemic: the 2022 NSDUH continued the use of multimode data collection procedures (both in-person and virtual data collection) that were first implemented in the fourth quarter of the 2020 NSDUH. Overall, 40.7% of interviews were completed via the web, and 59.3% were completed in person. In 2022, the weighted response rates for household screening and for interviewing were 25.5% and 47.4%, respectively, for an overall response rate of 12.1% for people aged 12 or older. - Given the use of multimode data collection procedures throughout the entirety of the collection year and the rate of non-response, comparison of estimates from the 2022 NSDUH with those from prior years must be made with caution. Please see the [2022 National Survey on Drug Use and Health Methodological Summary and Definitions report](https://www.samhsa.gov/data/report/2022-methodological-summary-and-definitions) for further information on how these data were collected and calculated. #### National Comorbidity Survey Adolescent Supplement (NCS-A) Diagnostic Assessment and Population: - The NCS-A was carried out under a cooperative agreement sponsored by NIMH to meet a request from Congress to provide national data on the prevalence and correlates of mental disorders among U.S. youth. The NCS-A was a nationally representative, face-to-face survey of 10,123 adolescents aged 13 to 18 years in the continental United States. The survey was based on a dual-frame design that included 904 adolescent residents of the households that participated in the adult U.S. National Comorbidity Survey Replication and 9,244 adolescent students selected from a nationally representative sample of 320 schools. The survey was fielded between February 2001 and January 2004. DSM-IV mental disorders were assessed using a modified version of the fully structured World Health Organization Composite International Diagnostic Interview. Survey Non-response: - The overall adolescent non-response rate was 24.4%. This is made up of non-response rates of 14.1% in the household sample, 18.2% in the un-blinded school sample, and 77.7% in the blinded school sample. Non-response was largely due to refusal (21.3%), which in the household and un-blinded school samples came largely from parents rather than adolescents (72.3% and 81.0%, respectively). The refusals in the blinded school sample, in comparison, came almost entirely (98.1%) from parents failing to return the signed consent postcard. For more information, see [PMID: 19507169](https://www.ncbi.nlm.nih.gov/pubmed/19507169) and the [NIMH NCS-A study page](https://www.nimh.nih.gov/news/science-updates/2010/national-survey-confirms-that-youth-are-disproportionately-affected-by-mental-disorders). Last Updated: September 2024
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