Predictors of obesity among post graduate trainee doctors working in a tertiary care hospital of public sector in Karachi, Pakistan.

OBJECTIVES To identify the predictors of obesity among post graduate trainee doctors working in a tertiary care hospital of public sector at Karachi, Pakistan. METHODS A cross sectional analytical study was conducted at one of the tertiary care hospitals of public sector in Karachi. Information was collected from 117 post graduate trainee doctors via pre-tested self administered questionnaire and standard tools were used for height and weight measurement. Obesity was defined as body mass index (BMI) > or =23 by using South Asian cut-off points. SPSS version 16 was used for data analysis, and logistic regression technique was applied to come up with predictors of obesity. RESULTS Frequency of overweight and obesity among doctors was 31.6% and 28.2% respectively. Nearly, 18% were using tobacco and family history of obesity was present in 44%. Approximately 64% doctors were taking lunch outside home, 76% were taking tea at least once a day, 59% were taking snacks between meals and 50% were physically inactive. Predictors of obesity among doctors include; taking lunch outside home OR = 7.11 (2.28-22.09), snacks between meals OR = 5.36 (1.51-19.03), tea OR = 7.85 (1.63-37.63), physical activity OR = 0.18 (0.05-0.57), increase duration of training OR = 1.7 (1.15-2.49), family history of obesity OR = 3.35 (1.11-10.08) and male gender OR = 3.83 (1.07-13.72). CONCLUSION Frequency of overweight and obesity was high among post graduate trainee doctors. Taking lunch outside home, snacks and tea intake between meals, increase duration of training, family history of obesity, male gender and lack of physical activity were found to be predictors of obesity among doctors.