Table 3 Class and participant characteristics, ‘intention to treat’-analysis
Class characteristics | Total population | EOtC group | Comparison group | Difference EOtC vs comparison | p, EOtC vs comparison | |
|---|---|---|---|---|---|---|
Number of schools | 12 | 12 | 12 | 0 | - | |
Number of classes | 33 | 17 | 16 | 1 | - | |
Weekly EOtC days | 0.73 ± 0.83 | 1.06 ± 0.80 | 0.38 ± 0.70 | 0.68 | 0.017 ( n = 33) a | |
Weekly EOtC minutes | 154 ± 171 | 239 ± 151 | 64 ± 142 | 175 | 0.002 ( n = 33) a | |
Classes with ≥150 min EOtC | 15 of 33 (45%) | 13 of 17 (76%) | 2 of 16 (13%) | 11 | 0.000 ( n = 33) b | |
Classes with ≥300 min EOtC | 9 of 33 (27%) | 7 of 17 (41%) | 2 of 16 (13%) | 5 | 0.065 (n = 33)b | |
Number of participants | 663 | 346 | 317 | 29 | - | |
Participants per class | 20.1 ± 3.3 | 20.4 ± 3.2 | 19.8 ± 3.3 | 0.5 | 0.648 (n = 33)a | |
Participant characteristics | Total population, included participants | Total population, excluded participants | p, total included vs excluded | EOtC group, included participants | Comparison group, included participants | p, included EOtC vs included comparison |
Proportion participants in group (%) | 361 (54.4) | 302 (45.6) | - | 201 (58.1) | 160 (50.5) | - |
Proportion participants in EOtC (%) | 201 of 361 (55.7) | 147 of 302 (48.7) | 0.098 (n = 663)b | - | - | - |
Participants per class | 10.9 ± 4.6 | 9.2 ± 3.7 | - | 11.8 ± 4.5 | 10.0 ± 4.4 | - |
Age, years | 10.89 ± 1.03 | 11.12 ± 1.07 | 0.006 ( n = 551) a | 10.82 ± 1.05 | 10.95 ± 1.01 | 0.284 (n = 296)a |
% girls | 61.2 | 41.1 | 0.000 ( n = 663) b | 63.3 | 59.3 | 0.431 (n = 361)b |
BMI, kg/m^2 | 17.3 ± 2.4 | 18.4 ± 3.1 | 0.000 ( n = 660) a | 17.2 ± 2.2 | 17.4 ± 2.6 | 0.392 (n = 360)a |
BMI percentile* | 44.2 ± 27.5 | 54.7 ± 28.5 | 0.000 ( n = 550) a | 43.7 ± 25.7 | 45.0 ± 29.5 | 0.683 (n = 296)a |
% overweight/obese | 9.8 | 20.1 | 0.000 ( n = 550) b | 7.9 | 11.4 | 0.315 (n = 296)b |