Any LRI LRI without Wheeze1 LRI with Wheeze Factor RR 95% CI RR 95% CI RR 95% CI Male child 1.64 1.21, 2.22 2.32 1.27, 4.26 1.54 1.04, 2.29 Water damage or   mold/mildew 1.34 0.99, 1.82 – – 1.35 0.90, 2.04 Born in winter 0.65 0.44, 0.97 0.84 0.44, 1.60 0.50 0.28, 0.91 Breastfed ever 0.74 0.55, 0.98 0.54 0.31, 0.93 0.82 0.55, 1.21 Siblings 1.56 1.14, 2.15 1.51 0.85, 2.67 1.82 1.18, 2.79 High fungal levels 1.86 1.21, 2.88 3.88 1.43, 10.52 1.58 0.95, 2.64

Definition of abbreviations: CI = confidence interval; RR = relative risk.

Water damage or mold/mildew was not included in this model. It was not significant in a univariate model (p = 0.15), and the model with all six variables will not converge because of so few events.