Gender differences in worries about putting on weight and dieting at ages 11, 13, and 15
| Within “lower”, “middle” and “overweight” BMIs for gender | ||||||
|---|---|---|---|---|---|---|
| Overall | Lower | Middle | Overweight† | BMI category by gender interaction* (sig) | ||
| *Calculated via logistic regression. † “overweight”: age 11 =14.5% (M), 18.1% (F)— sig of sex difference =0.014; age 13 =15.7% (M), 17.5% (F)—sig =0.243; age 15 =16.0% (M), 18.0% (F)—sig =0.220. | ||||||
| Worried - putting on weight - % (95% CI) | ||||||
| Age 11 – | M | 29.8 (27.4 to 32.3) | 13.8 (10.1 to 18.5) | 27.5 (24.6 to 30.5) | 61.1 (54.1 to 67.7) | Wald = 0.8 (0.685) |
| F | 44.4 (41.7 to 47.2) | 20.5 (16.1 to 25.9) | 43.4 (39.9 to 46.9) | 75.6 (69.5 to 80.7) | ||
| Ratio F : M | 1.5 | 1.5 | 1.6 | 1.2 | ||
| Age 13 – | M | 27.7 (25.3 to 30.3) | 7.3 (4.7 to 11.2) | 24.9 (22.0 to 28.1) | 65.8 (58.8 to 72.2) | Wald = 6.1 (0.048) |
| F | 58.7 (56.0 to 61.7) | 28.5 (23.0 to 34.7) | 61.6 (58.0 to 65.1) | 83.0 (77.2 to 87.6) | ||
| Ratio F : M | 2.1 | 3.9 | 2.5 | 1.3 | ||
| Age 15 – | M | 22.9 (20.5 to 25.4) | 4.5 (2.5 to 8.1) | 21.5 (18.6 to 24.7) | 52.3 (44.9 to 59.6) | Wald = 4.2 (0.120) |
| F | 70.5 (67.7 to 73.2) | 41.2 (34.8 to 48.0) | 75.2 (71.7 to 78.4) | 87.7 (82.2 to 91.7) | ||
| Ratio F : M | 3.1 | 9.1 | 3.5 | 1.7 | ||
| Slimming diet - % (95% CI) | ||||||
| Age 11 – | M | 7.6 (6.3 to 9.1) | 1.9 (0.8 to 4.4) | 4.2 (3.1 to 5.8) | 30.2 (24.2 to 37.0) | Wald = 9.4 (0.009) |
| F | 10.8 (9.2 to 12.7) | 0.4 (0.1 to 2.2) | 8.5 (6.7 to 10.7) | 30.2 (24.6 to 36.5) | ||
| Ratio F : M | 1.4 | 0.2 | 2.0 | 1.0 | ||
| Age 13 – | M | 5.3 (4.1 to 6.7) | 0.0 (0.0 to 1.5) | 3.0 (2.0 to 4.4) | 21.5 (16.2 to 27.8) | Wald = 6.6 (0.038) |
| F | 15.8 (13.8 to 18.0) | 1.3 (0.4 to 3.8) | 13.9 (11.6 to 16.7) | 38.9 (32.4 to 45.8) | ||
| Ratio F : M | 3.0 | N/A | 4.6 | 1.8 | ||
| Age 15 – | M | 4.7 (3.6 to 6.1) | 0.5 (0.1 to 2.5) | 3.3 (2.2 to 4.9) | 16.0 (11.3 to 22.2) | Wald = 5.3 (0.070) |
| F | 26.1 (23.6 to 28.8) | 8.1 (5.1 to 12.6) | 25.8 (22.6 to 29.3) | 48.4 (41.3 to 55.5) | ||
| Ratio F : M | 5.5 | 16.2 | 7.8 | 3.0 | ||