Psychometric properties of quality of life (qls) scale : a brief report

Abstract

Quality of life research in chronic schizophrenia has not adequately focussed upon psychometric properties of the disease specific scales (including Quality of Life Scale); especially in the cross-cultural perspective. The authors attempted to assess certain psychometric properties of the Quality of Life Scale (QLS); modified as per the Indian cultural background Fifteen patients of ICD-10 chronic schizophrenia and their key relatives were administered QLS and rated by two investigators. Patients were also administered Lehman's Quality of Life Interview-Brief Version. Correlation coefficients were high for inter-rater reliability and divergent validity and inconsistent for convergent validity. Results support the original construct of QLS and demonstrate its easy crosscultutral applicability to key relatives by clinicians.

Keywords: Quality of life; disease specific scales; quality of life scale; reliability; validity.