Cognitive functioning in schizophrenia, schizoaffective disorder and affective psychoses: Meta-analytic study

Abstract

Background: Cognitive functioning in affective psychosis and schizoaffective disorder is much less studied compared with schizophrenia. Aims: To quantitatively undertake a meta-analysis of the available data that directly compares cognitive functioning across schizophrenia, schizoaffective disorder and affective psychosis. Method: Following a thorough literature review, 31 studies that compared the performances of people with schizophrenia (1979 participants) with that of those with affective psychosis or schizoaffective disorder (1314 participants) were included. To determine the effect of demographic and clinical confounders, meta-regression and subgroup analyses were conducted. Results: I..