Clinical outcomes at age three years.

Bolus vitamin D versus control.RR = Risk Ratio, OR = unadjusted odds ratio, aOR = adjusted odds ratio, API = Asthma predictive index, URTI = upper respiratory tract infection, LRTI = lower respiratory tract infection.†Model adjusted for mother’s ethnic group, presence of household smokers, maternal smoking in pregnancy, exclusive breast-feeding to four months, any parental allergic history, any child vitamin supplementation, number of children in the household, age mother left full-time education and baseline concentration of 25(OH)D in maternal blood.*Adjusted p-value for multiple testing non-significant at 20% level.