Table A.2N, Past Year Mental Disorders Among Adults Aged 18 Or ...

Table A.2NPast Year Mental Disorders among Adults Aged 18 or Older, by Age Group: Numbers in Thousands, MHSS Clinical Study, 2008-2012

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MHSS = Mental Health Surveillance Study; SE = standard error.

*Low precision; no estimate reported.

NOTE: The MHSS was originally designed to collect 1,500 clinical interview cases in 2008 and 500 cases in subsequent years from 2009 to 2012. In 2011 and 2012, the National Institute of Mental Health provided funding to augment the clinical sample by 1,000 cases to further refine the predictive model for mental illness. During the 5-year MHSS, a sample of 5,653 respondents completed the MHSS clinical interview and were included in the analysis for this table.NOTE: Diagnostic variables are set to "missing" if respondent has insufficient nonmissing data on criterion variables requisite to make a definitive "yes" or "no" diagnosis. Cases with missing values in the variables collected from the clinical interview are excluded from the analyses.

NOTE: Weighted numbers are computed using the final analysis weights for the 2008-2012 MHSS clinical sample (MHFNLWGT).

Major depressive episode and manic episode are not disorders in and of themselves but were measured in the assessment of major depressive disorder and bipolar I disorder.

One or more mood disorders is defined as having major depressive disorder, bipolar I disorder, or dysthymic disorder in the past year.

As defined in the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR; see End Note 1), substance abuse and dependence are mutually exclusive. If a respondent is classified as having substance dependence (alcohol or illicit drugs), then he or she cannot be classified as abusing that substance regardless of responses to the abuse criteria questions.

Illicit drugs include marijuana/hashish, cocaine (including crack), stimulants (including methamphetamine), heroin, prescription pain relievers, sedatives/hypnotics/anxiolytics, hallucinogens/PCP, and inhalants.

One or more past year disorders is defined as having one of the measured mood disorders, anxiety disorders, substance use disorders (included or excluded as specified in the table), or eating disorders or having adjustment disorder (included or excluded as specified in the table) or intermittent explosive disorder. A respondent with at least one known disorder can be classified as having one or more disorders even if the total number of disorders cannot be determined.

Source: SAMHSA, Center for Behavioral Health Statistics and Quality, National Survey on Drug Use and Health (NSDUH) Main Study and Clinical Sample, 2008-2012.