Prevalence of psychological morbidity in an urban population: Is it related to modifiable physical risk factors?

Abstract

INTRODUCTION AND OBJECTIVES: To determine the prevalence of psychological morbidity and its relationship to diabetes mellitus, hypertension and alcohol use in an urban population in Sri Lanka. METHODS: This study was conducted in the Ragama Health Study cohort that consists of 2986 individuals, between 35-64 years of age, living in the Ragama Medical Officer of Health area in the district of Gampaha. Subjects were selected using age-stratified random sampling, from the electoral lists in 2007, and investigated using clinical, bio¬chemical and anthropometric examinations. Psychological morbidity was estimated using a pre-validated K10 questionnaire which has high sensitivity and specificity for non psychotic psychiatric disorders and a self administered GHQ 30 questionnaire. Baseline age-adjusted prevalence and three year incidence of hypertension and diabetes were estimated. Odds ratios for independent risk factors were calculated. RESULTS: The prevalence of psychological morbidity identified using the K10 questionnaire ranged from 18- 26% in a total population of 2919. Females had a higher prevalence of psychologrcal morbidity than males (28.6% vs 22.4%; p<0.001). Diabetic or hypertensive status and alcohol use did not predict psychological morbidity. A self report of overall low health status was predictive of psychological morbidity OR1.925 (95% CI 1.62 - 2.28). DISCUSSION: High prevalence of psychological morbidity was identified in this community study. Females are more at risk. In the initial analysis, psychological status was not associated with diabetes mellitus, hypertension or alcohol use.