Mean (95% CI) 45 y and 50 y Body mass index (BMI) and BMI change by TV-viewing, Work Sitting (h/d) and motorised commuting at 45 y (N = 6,562)*.

CI: confidence interval.*Results based on imputed data.aModel 1 adjusted for gender.bModel 2 adjusted for gender and 45 y BMI.cModel 3 adjusted for factors in Model 2 plus birthweight, social class at birth and in adulthood, education level, leisure time physical activity, smoking, longstanding illness limiting daily activity, dietary factors (chips, sweets, cake, fruit) and alcohol consumption.