Psychometric Properties of the Insight in Psychosis Questionnaire and its Correlation to Psychopathology in Indian Population

BACKGROUND: The present study attempted to standardize insight in psychosis questionnaire in India and correlate insight with psychopathology and functioning. MATERIALS AND METHODS: A cross-sectional study was conducted in July and August 2016. The questionnaire was translated into Hindi following standard procedure. After ensuring that the patients fulfilled criteria for the study, consent was taken, and insight in psychosis questionnaire (Hindi version), positive and negative syndrome scale for schizophrenia, clinical insight rating scale, Present State Examination insight item, and the global assessment of functioning scale were applied. Appropriate statistical analyses were done. RESULTS: The mean age of 53 patients included in the study was 33.42 ± 10.32 years. The majority of the patients were males, single and had <12 years of formal education and resided in joint families and urban areas. The mean duration of illness was 78.64 ± 86.16 months. The insight in psychosis questionnaire was found to have good internal consistency, split-half reliability, test-retest reliability, and convergent validity in the Indian population. Patients residing in the rural background had lower insight than those residing in urban areas, and patients having brief psychotic disorder had lower insight than those having schizophrenia. Insight was positively correlated with negative symptoms, general psychopathology, and total psychopathology but negatively correlated with positive symptoms. Psychopathology was negatively correlated with functioning. CONCLUSIONS: The study of insight and its correlation with psychopathology and functioning should be an important area for research as insight is associated with outcome and prognosis among patients with psychosis.