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January 1981

Hamilton Depression Rating ScaleExtracted From Regular and Change Versions of the Schedule for Affective Disorders and Schizophrenia

Author Affiliations

From the Research Assessment and Training Unit (Drs Endicott and Nee), New York State Psychiatric Institute, New York; the Department of Psychiatry, College of Physicians and Surgeons (Dr Endicott) and the Division of Biostatistics, School of Public Health (Dr Fleiss), Columbia University, New York; the Department of Psychology, New York University (Dr Cohen); and the Department of Psychiatry, Long Island-Jewish Hillside Medical Center, New Hyde Park, NY (Dr Sarantakos).

Arch Gen Psychiatry. 1981;38(1):98-103. doi:10.1001/archpsyc.1981.01780260100011

• Investigators who wish to use new procedures usually wish to relate their results to those already in the literature. This often results in the use of both old and new measures. The Schedule for Affective Disorders and Schizophrenia Regular and Change Versions (SADS and SADS-C) have advantages over the widely used Hamilton Depression Rating Scale (HDRS). A procedure was developed to extract the HDRS score from the SADS and SADS-C. The comparative reliability and the validity of the extracted HDRS score as a substitute for a real HDRS score was established. The SADS-C and the HDRS were completed by the raters for 48 subjects. The correlation between the extracted and real HDRS scores was positive and large.