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June 1982

A Comparison of Two Interview SchedulesThe Schedule for Affective Disorders and Schizophrenia-Lifetime and the National Institute for Mental Health Diagnostic Interview Schedule

Author Affiliations

From the Department of Psychiatry, University of Connecticut Health Center, Farmington.

Arch Gen Psychiatry. 1982;39(6):674-677. doi:10.1001/archpsyc.1982.04290060036007

• Two structured interviews, the Schedule for Affective Disorders and Schizophrenia—Lifetime (SADS-L) and the National Institute of Mental Health Diagnostic Interview Schedule (NIMH-DIS), were compared as methods of reducing information variance in the diagnostic process. Forty-two patients newly admitted to an alcohol treatment unit were randomly selected and were independently interviewed using the SADS-L and NIMH-DIS. The order of the interviews was random and they were separated by three to four days. Interrater reliability for each interview schedule was calculated using the k statistic and was found to be high. The degree of diagnostic concordance between the two interview schedules for several diagnostic categories was also found to be high.