Within-time representativeness of final sample (n=897)
| Characteristics | Responders‡ (n=614) | Non-responders‡ (n=283) |
| Year 3 follow-up | ||
| Maternal educational attainment† | ||
| None/primary/secondary school, n (%) | 290 (48.6) | 130 (47.1) |
| Some/completed third-level education, n (%) | 307 (51.4) | 146 (52.9) |
| Maternal GMS eligibility at baseline† | ||
| Not eligible, n (%) | 512 (84.3) | 244 (87.1) |
| Eligible, n(%) | 95 (15.7) | 36 (12.9) |
| Region† | ||
| West, n. (%) | 217 (35.3) | 80 (28.3) |
| East, n (%) | 397 (64.7) | 203 (71.7) |
| Maternal age at birth of proband, mean (SD), year† | 30.35 (5.9) | 29.75 (5.9) |
| Maternal oily fish intake in pregnancy, mean (SD), servings/day† | 0.06 (0.1) | 0.05 (0.1) |
| Maternal vegetable intake in pregnancy, mean (SD), servings/day† | 2.95 (1.9) | 2.88 (2.2) |
| Maternal vitamin D intake in pregnancy, mean (SD), µg/day† | 4.70 (4.8) | 5.60 (10.2) |
| Year-5 follow-up | n=511 | n=386 |
| Maternal educational attainment† | ||
| None/primary/secondary school, n (%) | 241 (48.7) | 179 (47.4) |
| Some/completed third-level education, n (%) | 254 (51.3) | 199 (52.6) |
| Maternal GMS eligibility at baseline† | ||
| Not eligible, n (%) | 429 (85.0) | 327 (85.6) |
| Eligible, n (%) | 76 (15.0) | 55 (14.4) |
| Region† | ||
| West, n (%) | 165 (32.3) | 132 (34.2) |
| East, n (%) | 346 (67.7) | 254 (65.8) |
| Maternal age at birth of proband, mean (SD), year† | 30.10 (5.8) | 30.24 (5.9) |
| Maternal oily fish intake in pregnancy, mean (SD), serving/day† | 0.06 (0.1) | 0.06 (0.1) |
| Maternal vegetable intake in pregnancy, mean (SD), serving/day† | 2.93 (2.1) | 2.94 (1.9) |
| Maternal vitamin D intake in pregnancy, mean (SD), µg/day† | 4.70 (6.1) | 5.30 (7.9) |
| Year 10 follow-up | n=432 | n=465 |
| Maternal educational attainment* | ||
| None/Primary/Secondary school, n (%) | 174 (40.7) | 246 (55.2) |
| Some/Completed third-level education, n (%) | 253 (59.3) | 200 (44.8) |
| Maternal GMS eligibility at baseline* | ||
| Not eligible, n (%) | 385 (89.7) | 371 (81.0) |
| Eligible, n (%) | 44 (10.3) | 87 (19.0) |
| Region* | ||
| West, n (%) | 166 (38.4) | 131 (28.2) |
| East, n (%) | 266 (61.6) | 334 (71.8) |
| Maternal age at birth of proband, mean (SD), year* | 31.55 (5.2) | 28.86 (6.1) |
| Maternal oily fish intake in pregnancy, mean (SD), servings/day† | 0.06 (0.1) | 0.06 (0.1) |
| Maternal vegetable intake in pregnancy, mean (SD), servings/day† | 3.11 (2.1) | 2.76 (2.0) |
| Maternal vitamin D intake in pregnancy, mean (SD), µg/day† | 5.00 (7.5) | 4.90 (6.4) |
↵*P<0.001.
†Non-significant.
‡Numbers do not always add up to total as varied numbers at missing data at certain variables.
GMS, general medical scheme.