Table III.
Prevalence and odds ratios for positive skin-prick test at age 5, by cord blood 25(OH)D level.
| Unadjusted | Adjusted* | |||||
|---|---|---|---|---|---|---|
| 25(OH)D (nmol/L) | % (n+/N) | OR (95% CI) | P-value | OR (95% CI) | P-value | |
| Positive Skin-Prick Test (n = 172) | <50 | 37.5 (18/48) | 1.1 (0.5, 2.3) | 0.84 | 1.2 (0.5, 2.7) | 0.66 |
| 50–74.9 | 35.7 (25/70) | ref | - | ref | - | |
| 75–99.9 | 50.0 (19/38) | 1.8 (0.8, 4.0) | 0.15 | 2.0 (0.8, 4.5) | 0.12 | |
| 100+ | 68.8 (11/16) | 4.0 (1.2, 12.7) | 0.02 | 3.4 (1.0, 11.4) | 0.046 | |
Abbreviations: OR (odds ratio), CI (confidence interval)
*
Adjusted for maternal ethnicity, household smoking and birth season.