Table 1 Characteristics of the study population
|  | Intervention group (N = 419) | Control group (N = 104) | Total (N = 523) | |||
|---|---|---|---|---|---|---|
M (SD) | N (%)b | M (SD) | N (%)b | M (SD) | N (%)b | |
Child characteristics at baseline | ||||||
Age (years) | 8.47 (1.05) | Â | 8.68 (1.07) | Â | 8.51 (1.06) | Â |
Gender | ||||||
 Boys |  | 191 (45.6) |  | 49 (47.1) |  | 240 (45.9) |
 Girls |  | 228 (54.4) |  | 55 (52.9) |  | 283 (54.1) |
Ethnicitya | ||||||
 Western |  | 223 (53.5) |  | 74 (71.8) |  | 297 (57.1) |
 Non-Western |  | 194 (46.5) |  | 29 (28.2) |  | 223 (42.9) |
BMI z-score | 0.23 (1.09) | Â | 0.22 (0.97) | Â | 0.23 (1.06) | Â |
Weight status | ||||||
 Underweight |  | 13 (3.3) |  | 3 (3.1) |  | 16 (3.2) |
 Normal weight |  | 293 (73.3) |  | 76 (77.6) |  | 369 (74.1) |
 Overweight |  | 55 (13.8) |  | 11 (11.2) |  | 66 (13.3) |
 Obese |  | 39 (9.8) |  | 8 (8.2) |  | 47 (9.4) |
Parent characteristics at baseline | ||||||
Age (years)a | 39.15 (5.58) | Â | 36.45 (5.91) | Â | 38.64 (5.74) | Â |
Educational levela | ||||||
 Low |  | 80 (24.2) |  | 34 (45.9) |  | 114 (28.1) |
 Middle |  | 124 (37.5) |  | 26 (35.1) |  | 150 (37.0) |
 High |  | 127 (38.4) |  | 14 (18.9) |  | 141 (34.8) |
Family situation | ||||||
 Living together |  | 272 (81.9) |  | 55 (73.3) |  | 327 (80.3) |
 Single |  | 60 (18.1) |  | 20 (26.7) |  | 80 (19.7) |
BMI (kg/m2) | 25.03 (4.19) | Â | 26.01 (4.95) | Â | 25.19 (4.33) | Â |
Weight status | ||||||
 Normal weight |  | 145 (57.8) |  | 28 (56.0) |  | 173 (57.5) |
 Overweight |  | 106 (42.2) |  | 22 (44.0) |  | 128 (42.5) |