| Total soy intakes at baseline |  | ||
---|---|---|---|---|
 | T1 (0–8.2)2 | T2 (8.5–39.6)2 | T3 (40.1–69.0)2 | p3 |
Girls (n=2152) | ||||
 N (%) | 717 (33.3) | 718 (33.4) | 717 (33.3) |  |
 Birth weight (kg) | 3.1 (2.7, 3.8) | 3.2 (2.9, 3.7) | 3.2 (2.6, 3.8) | 0.4 |
 Age at baseline (years) | 7.0 (0.8) | 7.2 (0.7) | 7.1 (0.8) | 0.2 |
 Age at menarche (years, n=1162) | 12.5 (0.8) | 12.8 (0.7) | 13.1 (1.1) | 0.03 |
 Age at Tanner stage B24 (years, n=1748) | 9.1 (1.3) | 9.3 (1.4) | 9.5 (1.2) | 0.02 |
 BMI SDS at baseline (kg/m2) | 0.1 (0.7) | 0.1 (0.6) | 0.2 (0.8) | 0.09 |
 Percent body fatness5at baseline (%) | 16.7 (15.2, 19.5) | 16.3 (15.0, 18.6) | 15.6 (13.7, 18.5) | 0.04 |
 Overweight6 (n (%)) | 96 (13.4) | 85 (11.8) | 80 (11.2) | 0.09 |
 High physical activity (n (%)) | 190 (26.5) | 202 (28.1) | 198 (27.6) | 0.1 |
Parental data at baseline | ||||
 High family income7 (n (%)) | 151 (21.1) | 158 (22.0) | 169 (23.6) | 0.06 |
 High paternal educational level8 (n (%)) | 144 (20.1) | 166 (23.1) | 186 (25.9) | 0.05 |
 High maternal educational level8 (n (%)) | 127 (17.7) | 133 (18.5) | 137 (19.1) | 0.06 |
 Smoking in the household (n (%)) | 471 (65.8) | 408 (56.8) | 345 (48.1) | 0.03 |
 Mother’s age at menarche (years) | 12.1 (1.0) | 12.3 (0.9) | 12.4 (1.1) | 0.08 |
Nutritional data9 | ||||
 Total energy intake (kcal/day) | 1594 (236) | 1749 (242) | 1638 (251) | 0.05 |
 Total soy (soybean and products) (g/day) | 6.1 (3.9) | 29.2 (8.7) | 56.7 (9.8) | <0.0001 |
 Total fibre (g/day) | 10.3 (1.3) | 10.5 (1.2) | 10.6 (1.4) | 0.06 |
  Cereal fibre (g/day) | 5.5 (1.0) | 5.5 (0.9) | 5.6 (1.1) | 0.2 |
  Vegetable and fruit fibre (g/day) | 4.2 (1.3) | 4.3 (1.1) | 4.1 (1.1) | 0.1 |
 Carbohydrate (% of energy) | 56.6 (5.0) | 57.8 (4.8) | 57.2 (4.6) | 0.2 |
 Fat (% of energy) | 29.1 (4.6) | 27.4 (4.2) | 28.7 (4.3) | 0.3 |
 Protein (% of energy) | 14.3 (2.0) | 14.8 (2.1) | 14.1 (1.9) | 0.2 |
 | T1 (0–3.2)10 | T2 (4.6–48.2)10 | T3 (49 1–82.6)10 | p3 |
Boys (n=2629) | ||||
 N (%) | 876 (33.3) | 876 (33.3) | 877 (33.3) |  |
 Birth weight (kg) | 3.6 (3.0, 3.9) | 3.4 (2.7, 4.1) | 3.4 (2.5, 4.0) | 0.3 |
 Age at baseline (years) | 7.1 (0.8) | 7.3 (0.6) | 7.3 (0.7) | 0.1 |
 Age at voice break (years, n=829) | 13.6 (1.3) | 13.9 (1.2) | 14.1 (1.2) | 0.04 |
 Age at pubertal stage G24 (years, n=1233) | 10.8 (1.3) | 11.1 (1.2) | 11.4 (1.2) | 0.04 |
 BMI SDS at baseline (kg/m2) | 0.1 (0.6) | 0.1 (0.8) | 0.2 (0.8) | 0.1 |
 Percent body fatness5 at baseline (%) | 13.7 (11.0, 17.4) | 13.5 (10.1, 17.2) | 13.5 (10.6, 17.5) | 0.05 |
 Overweight6 at baseline (n (%)) | 122 (13.9) | 107 (12.2) | 104 (11.9) | 0.06 |
 High physical activity (n (%)) | 239 (27.3) | 259 (29.6) | 255 (29.1) | 0.07 |
Parental data at baseline | ||||
 High family income7 (n (%)) | 182 (20.8) | 183 (20.9) | 186 (21.2) | 0.06 |
 Secondary paternal educational level8 (n (%)) | 198 (22.6) | 209 (23.9) | 221 (25.2) | 0.04 |
 Secondary maternal educational level8 (n (%)) | 159 (18.2) | 163 (18.6) | 167 (19.0) | 0.03 |
 Smoking in the household (n (%)) | 594 (67.8) | 504 (57.5) | 458 (52.2) | 0.04 |
 Mother’s age at menarche (years) | 12.1 (0.8) | 12.3 (0.9) | 12.2 (0.9) | 0.06 |
Nutritional data9 | ||||
 Total energy intake (kcal/day) | 1829 (249) | 1961 (225) | 1790 (229) | 0.1 |
 Total soy (soybean and products) (g/day) | 1.6 (1.3) | 36.9 (7.6) | 57.2 (8.7) | <0.0001 |
 Total fibre (g/day) | 9.8 (1.2) | 10.1 (1.3) | 9.9 (1.2) | 0.1 |
  Cereal fibre (g/day) | 4.3 (1.1) | 5.2 (1.0) | 5.3 (1.1) | 0.1 |
  Vegetable and fruit fibre (g/day) | 3.9 (1.2) | 3.8 (1.3) | 4.1 (1.2) | 0.2 |
 Carbohydrate (% of energy) | 58.5 (6.3) | 60.8 (6.1) | 59.4 (5.9) | 0.2 |
 Fat (% of energy) | 27.2 (4.3) | 26.1 (4.1) | 26.8 (4.2) | 0.6 |
 Protein (% of energy) | 14.3 (2.1) | 13.1 (2.2) | 12.8 (2.1) | 0.3 |