Mean BMI and proportion overweight at each of two time points, and BMI change, by childhood social class
| Mean BMI (SE)* | Overweight† | |||||||
|---|---|---|---|---|---|---|---|---|
| Exam 1 | Exam 2 | |||||||
| Number (%) | Exam 1 | Exam 2 | N (%) | OR (95% CI) | N (%) | OR (95% CI) | Mean BMI change (SE)* | |
| *Adjusted for age at first examination. | ||||||||
| †BMI ⩾25 kg/m2. | ||||||||
| ‡From regression analyses | ||||||||
| Men | ||||||||
| I | 128 (19) | 21.5 (0.16) | 23.9 (0.22) | 6 (5) | 1.0 | 39 (30) | 1.0 | 2.43 (0.17) |
| II | 260 (38) | 21.5 (0.09) | 24.3 (0.12) | 23 (9) | 2.14 (0.81 to 5.65) | 100 (38) | 1.41 (0.90 to 2.22) | 2.75 (0.09) |
| III–V | 295 (43) | 21.6 (0.12) | 24.7 (0.16) | 20 (7) | 1.58 (0.59 to 4.21) | 127 (43) | 1.72 (1.10 to 2.68) | 3.06 (0.12) |
| p (trend)‡ | 0.52 | 0.010 | 0.65 | 0.016 | 0.007 | |||
| Women | ||||||||
| I | 95 (24) | 21.3 (0.21) | 21.8 (0.22) | 7 (7) | 1.0 | 6 (6) | 1.0 | 0.48 (0.22) |
| II | 167 (43) | 21.3 (0.12) | 22.1 (0.13) | 9 (5) | 0.70 (0.25 to 1.96) | 16 (10) | 1.59 (0.60 to 4.23) | 0.82 (0.13) |
| III–V | 125 (32) | 21.2 (0.19) | 22.4 (0.20) | 10 (8) | 1.09 (0.40 to 2.97) | 20 (16) | 2.82 (1.09 to 7.34) | 1.16 (0.20) |
| p (trend)‡ | 0.78 | 0.076 | 0.80 | 0.018 | 0.042 | |||