Table 3. Multinomial logistic regression analyses relating BMI categories and time spent in sedentary behaviour. OR 95% CI P value Underweight <2 hrs/day sedentary 1.397 0.968-2.017 0.07 >4 hrs/day sedentary 1.294 0.634-2.643 0.48 Overweight <2 hrs/day sedentary 0.469 0.317-0.695 <0.001 >4 hrs/day sedentary 1.963 1.060-3.638 0.03 Normal BMI and spending between two and four hours per day in sedentary activity were used as the reference categories.