Table 1 Comparison of baseline characteristics between those with cord blood vitamin D (25 (OH) D) concentration results and total allergy follow-up cohort
Characteristic | Vitamin D Cohort (n = 270) | Total Cohort (n = 706) |
|---|---|---|
Mother’s age at trial entry (years) a | 28.8 (5.6) | 29.5 (5.7) |
Race – Caucasian | 256 (94.8) | 672 (95.2) |
Mother completed secondary education | 171 (63.3) | 454 (64.3) |
Mother smoked during or leading up to pregnancy | 73 (27.0) | 205 (29.0) |
Primiparous | 110 (40.7) | 281 (39.8) |
Maternal history of allergic disease | 182 (67.4) | 493 (69.8) |
Dual parental history of allergic disease | 72 (26.7) | 206 (29.2) |
Infant sex (male) | 129 (47.8) | 337 (47.7) |
Treatment group | ||
DHA | 130 (48.1) | 368 (52.1) |
Control | 140 (51.9) | 338 (47.9) |