• We evaluated the test-retest interrater reliability of the Family History Research Diagnostic Criteria (FH-RDC) in 58 depressed patients who described 341 first-degree relatives. Reliability was examined as a function of the threshold to determine caseness. In general, diagnostic reliability was good-excellent for specific FH-RDC disorders, but not for the residual category of other psychiatric disorder. A higher diagnostic threshold was associated with greater reliability, especially for the diagnosis of depression. Patient variance accounted for a greater percentage of the disagreements between the acthan did rater variance.
Zimmerman M, Coryell W, Pfohl B, Stangl D. The Reliability of the Family History Method for Psychiatric Diagnoses. Arch Gen Psychiatry. 1988;45(4):320-322. doi:10.1001/archpsyc.1988.01800280030004