Table 2. 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)*.
| 45 y Sedentary behaviour | 45 y | 50 y | 45–50 y change | |
| TV-viewing (h/d) | Model 1a | Model 1a | Model 2b | Model 3c |
| 0 | −0.25 (−2.18,1.67) | 0.11 (−1.89,2.12) | 0.34 (−0.64,1.32) | 0.32 (−0.66,1.30) |
| 0–1 | Referent | Referent | Referent | Referent |
| 1–2 | 0.90 (0.53,1.27) | 0.91 (0.53,1.30) | 0.09 (−0.10,0.28) | 0.05 (−0.14,0.24) |
| 2–3 | 1.61 (1.23,1.99) | 1.82 (1.42,2.21) | 0.35 (0.16,0.55) | 0.26 (0.06,0.46) |
| 3–4 | 2.19 (1.73,2.64) | 2.19 (1.72,2.66) | 0.20 (−0.03,0.43) | 0.04 (−0.19,0.28) |
| >4 | 2.83 (2.29,3.36) | 3.09 (2.53,3.65) | 0.52 (0.24,0.79) | 0.32 (0.03,0.60) |
| Per unit increase | 0.69 (0.59,0.80) | 0.75 (0.64,0.86) | 0.11 (0.06,0.17) | 0.06 (0.01,0.12) |
CI: confidence interval.
*
Results based on imputed data.
a
Model 1 adjusted for gender.
b
Model 2 adjusted for gender and 45 y BMI.
c
Model 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.