Table 1– Univariate logistic regression with vitamin D for respiratory and allergic conditions: age 14 yrs
Outcomes at age 14 yrsWhole populationMalesFemales
Subjects n/NOR (95% CI)p-valueSubjects n/NOR (95% CI)p-valueSubjects n/NOR (95% CI)p-value
BHR236/12860.35 (0.13–0.95)0.039104/6660.33 (0.07–1.48)0.148132/6200.44 (0.11–1.69)0.232
Atopy827/13790.49 (0.23–1.06)0.071465/7130.22 (0.07–0.67)0.008362/6660.79 (0.27–2.34)0.672
HDM sensitisation540/13790.36 (0.16–0.77)0.009311/7130.20 (0.07–0.59)0.004229/6660.51 (0.16–1.60)0.248

  • Actual vitamin D at age 14 yrs (in nmol·L−1) was log10-transformed and included in univariate logistic regression analyses for outcomes at age 14 yrs. Forced expiratory volume in 1 s/forced vital capacity ratio <80% was the criterion used to define poor lung function at age 14 yrs. n: total subjects in regression; N: subjects in regression with outcome; BHR: bronchial hyperresponsiveness; HDM: house dust mite.