The prevalence and profile of non-affective psychosis in the Nigerian Survey of Mental Health and Wellbeing

This study aimed to estimate the prevalence and correlates of non-affective psychosis among adult Nigerians It was part of the Nigerian Survey of Mental Health and Wellbeing and was conducted in 8 out of the 22 states in Nigeria, representing about 22%, of the national population Face-to-face interviews with adults aged 18 years and over were administered using the WIIO Composite International Diagnostic Interview. version 3 (CIDI 3) Clinical re-appraisal was conducted by clinicians oil a subsample of respondents Vie CIDI 3 was found to have acceptable agreement with clinician-administered assessments, with kappa values ranging between 0.52 to 0.72, respectively, for narrowly defined and broad categories of non-affective psychosis. The lifetime prevalence of non-affective psychosis was 21%, with visual hallucinations being the most commonly reported symptom and delusions of reference the least Non-affective psychosis was significantly more common among urban dwellers persons with non-affective psychosis were at elevated risk to report both lifetime and 12-month comorbid DSM-IV disorders as well as to experience impairment in basic and instrumental role functioning Only a minority had received any treatment