Table 3 Effect of the Healthy High School intervention on meal frequency and eating habits at 9-month follow-up. Crude and adjusted analyses of the imputed data sets, and complete case data sets
|  | Imputed data sets N = 40*4577 | Complete case data sets | ||||
|---|---|---|---|---|---|---|
| Â | % at follow-up | Primary analysis Adjusteda OR (95% CI) | Crude OR (95% CI) | % at follow-up | Adjusteda OR (95% CI) | Crude OR (95% CI) |
Daily intake of breakfast (Monday-Sunday) |  |  |  |  | N = 3178 | |
Intervention | 39.9 | 0.85 (0.65;1.10) | 0.84 (0.60;1.16) | 49.8 | 1.00 (0.82;1.23) | 0.97 (0.75;1.25) |
Control | 42.1 | 1 | 1 | 49.3 | 1 | 1 |
Daily intake of lunch (Monday-Sunday) |  |  |  |  | N = 3160 | |
Intervention | 46.3 | 0.96 (0.75;1.22) | 0.91 (0.73;1.15) | 54.7 | 1.05 (0.87;1.26) | 1.02 (0.86;1.21) |
Control | 48.6 | 1 | 1 | 54.2 | 1 | 1 |
Daily intake of minimum 1 litreb of water |  |  |  |  | N = 3185 | |
Intervention | 71.8 | 1.14 (0.92;1.40) | 1.16 (0.93;1.45) | 72.5 | 1.12 (0.90;1.40) | 1.18 (0.93;1.50) |
Control | 68.3 | 1 | 1 | 69.1 | 1 | 1 |
Intake of fresh fruit at least twice a dayc |  |  |  |  | N = 3177 | |
Intervention | 15.0 | 1.07 (0.84;1.37) | 1.12 (0.87;1.45) | 18.2 | 1.18 (0.93;1.49) | 1.17 (0.91;1.52) |
Control | 14.6 | 1 | 1 | 15.8 | 1 | 1 |
Intake of vegetables at least twice a dayc |  |  |  |  | N = 3156 | |
Intervention | 16.2 | 1.01 (0.77;1.33) | 1.06 (0.78;1.43) | 19.4 | 1.07 (0.80;1.43) | 1.10 (0.79;1.53) |
Control | 16.0 | 1 | 1 | 17.8 | 1 | 1 |