National Comorbidity Survey

National Comorbidity Survey
Name	National Comorbidity Survey
Country	United States
Institution	Harvard University
Start date	1990
End date	1992
Sample size	8,098

National Comorbidity Survey. The National Comorbidity Survey (NCS) is a comprehensive mental health study conducted in the United States from 1990 to 1992 by Ronald Kessler and Harvard University. This groundbreaking survey was designed to assess the prevalence and correlates of Diagnostic and Statistical Manual of Mental Disorders (DSM) disorders, including Major depressive disorder, Post-traumatic stress disorder, and Substance use disorder, among the US population, with the help of World Health Organization and National Institute of Mental Health. The NCS was a collaborative effort between Harvard University, University of Michigan, and Johns Hopkins University, and its findings have been widely cited in American Journal of Psychiatry, Journal of the American Medical Association, and New England Journal of Medicine.

Introduction

The National Comorbidity Survey was a pioneering study that aimed to investigate the co-occurrence of mental health disorders, such as Anxiety disorder, Mood disorder, and Personality disorder, in a representative sample of the US population, with the support of National Institutes of Health and Substance Abuse and Mental Health Services Administration. The survey was conducted in the context of the Decade of the Brain, a National Institute of Mental Health initiative, and was influenced by the work of Emil Kraepelin, Sigmund Freud, and Karl Jaspers. The NCS was also informed by the International Classification of Diseases and the Diagnostic and Statistical Manual of Mental Disorders, developed by the American Psychiatric Association. The study's findings have been compared to those of the Epidemiologic Catchment Area Study and the Australian Survey of Mental Health and Wellbeing, conducted by University of Melbourne and Australian Institute of Health and Welfare.

Methodology

The National Comorbidity Survey employed a stratified sampling design, with a sample of 8,098 respondents, selected from a US Census Bureau-defined sample of the US population, with the assistance of University of California, Los Angeles and Columbia University. The survey used a structured interview protocol, developed by World Health Organization and Harvard University, to assess the presence of DSM-III-R disorders, including Schizophrenia, Bipolar disorder, and Attention deficit hyperactivity disorder. The interviews were conducted by trained interviewers from University of Michigan and Johns Hopkins University, and the data were analyzed using statistical software developed by SAS Institute and IBM. The survey's methodology has been compared to that of the National Longitudinal Study of Adolescent Health and the Panel Study of Income Dynamics, conducted by University of North Carolina at Chapel Hill and University of Michigan.

Findings

The National Comorbidity Survey found that approximately half of the US population would experience a mental health disorder at some point in their lives, with Major depressive disorder and Anxiety disorder being the most common, according to Centers for Disease Control and Prevention and National Institute of Mental Health. The survey also found that Comorbidity was common, with many respondents experiencing multiple disorders, such as Post-traumatic stress disorder and Substance use disorder, as reported in Journal of Clinical Psychology and Addiction. The NCS also identified significant socioeconomic and demographic disparities in mental health, with African American and Hispanic respondents experiencing higher rates of mental health disorders, according to US Census Bureau and Pew Research Center. The study's findings have been cited in American Journal of Public Health and Journal of the American Medical Association.

Impact

The National Comorbidity Survey has had a significant impact on mental health policy and research, with its findings informing the development of mental health services and treatment guidelines, such as those developed by American Psychiatric Association and National Institute of Mental Health. The survey's results have also been used to estimate the economic burden of mental health disorders, with the help of World Health Organization and World Bank. The NCS has been cited in numerous scientific publications, including New England Journal of Medicine and Lancet, and has influenced the work of researchers such as Kay Redfield Jamison and Harrison Pope, from Johns Hopkins University and Harvard University. The study's findings have also been compared to those of the Global Burden of Disease Study and the World Mental Health Survey Initiative, conducted by University of Washington and World Health Organization.

Criticisms_and_Limitations

The National Comorbidity Survey has been subject to various criticisms and limitations, including concerns about the representativeness of the sample and the reliability of the diagnostic assessments, as reported in Journal of Clinical Epidemiology and Epidemiology. Some researchers, such as Robert Spitzer and Jean Endicott, have also questioned the survey's use of DSM-III-R criteria, which have been updated to DSM-5 by American Psychiatric Association. Additionally, the survey's cross-sectional design has been criticized for limiting the ability to establish causality and temporality, according to University of California, Berkeley and Columbia University. The study's limitations have been discussed in American Journal of Epidemiology and Journal of Psychiatric Research.

Follow-up_Studies

The National Comorbidity Survey has been followed by several subsequent studies, including the National Comorbidity Survey Replication (NCS-R) and the National Comorbidity Survey Adolescent Supplement (NCS-A), conducted by Harvard University and University of Michigan. These studies have used similar methodologies to assess the prevalence and correlates of mental health disorders in different age groups and populations, with the support of National Institute of Mental Health and Substance Abuse and Mental Health Services Administration. The NCS-R and NCS-A have also been used to evaluate the effectiveness of mental health interventions and treatment guidelines, as reported in Journal of the American Medical Association and New England Journal of Medicine. The findings of these studies have been compared to those of the National Longitudinal Study of Adolescent Health and the Panel Study of Income Dynamics, conducted by University of North Carolina at Chapel Hill and University of Michigan.

Category:Psychology