The World Mental Health Composite International Diagnostic Interview
The World Mental Health Survey Initiative
Health and Work Performance Questionaire
Baseline NCS Interview Schedule and Respondent Booklet
Notes to all users: The baseline NCS interview schedule is an adaptation of CIDI version 1.1. It was developed for paper and pencil administration (PAPI) rather than for computer administration (CAPI). The adaptation was made by Ronald Kessler, with the assistance of the field supervisory staff at the Survey Research Center, University of Michigan. Hans-Ulrich Wittchen served as the consultant to the Michigan team from the WHO CIDI Editorial Committee. Some publications refer to this baseline NCS instrument as the University of Michigan version of the CIDI (UM-CIDI). The UM-CIDI generates diagnoses according to the definitions and criteria of the DSM-III-R and ICD-10 systems. The conventional CIDI was modified in a number of ways for the UM-CIDI, as described in more detail elsewhere1-3. A number of other researchers used the UM-CIDI in surveys that were carried out subsequent to the baseline NCS. The diagnostic algorithms developed for the UM-CIDI are archived and will be available by a link shortly from this web site. (If you have a question about them please contact

1 Kessler, R.C., Wittchen, H-U., Abelson, J.M., McGonagle, K.A., Schwarz, N., Kendler, K.S., Knäuper, B., & Zhao, S. (1998). Methodological studies of the Composite International Diagnostic Interview (CIDI) in the US National Comorbidity Survey. International Journal of Methods in Psychiatric Research, 7(1), 33-55.

2 Kessler, R.C., Wittchen, H.-U., Abelson, J., & Zhao, S. (2000). Methodological issues in assessing psychiatric disorder with self-reports. In A.A. Stone, J.S. Turrkan, C.A. Bachrach, J.B. Jobe, H.S. Kurtzman, & V.S. Cain (Eds.), The Science of Self-Report: Implications for Research and Practice (pp. 229-255). Mahwah, NJ: Lawrence Erlbaum Associates.

3 Kessler, R.C., Mroczek, D.K., & Belli, R.F. (1999). Retrospective adult assessment of childhood psychopathology. In D. Shaffer, C.P. Lucas, & J.E. Richters (Eds.), Diagnostic Assessment in Child and Adolescent Psychopathology (pp. 256-284). New York: Guilford Press.

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Baseline NCS Interview Schedule and Respondent Booklet and Tobacco supplement