[Study of the diagnostic specificity by Schneider's first rank symptoms].

This study rediscussed the prevalence of Schneider's first rank symptoms (FRS) in 132 patients with mental diseases and the specificity and the sensitivity of FRS for schizophrenia. Results showed: In the absence of organic or toxic etiology, the specificity of FRS for schizophrenia as opposed to manicdepressive psychosis, was 93%. The sensitivity of FRS for Schizophrenia was 72.9%.