Associations between environmental risk factora including missing values, and health outcomes, by different methods handling missing values (OR [95% CI or 95% Cr]).

Abbreviations: CI, 95% confidence interval; Cr, 95% credibility interval, LM, linear regression model; OR, odds ratio; PLS, partial least squares.a: Environmental factor: formaldehyde exposure, expressed in µg/m3, (for one unit increase in the logarithmic scale), and health outcome: lower respiratory infection (LRI) or dry nigh cough (DNC).b: Association was adjusted for gender, socio-economic status, siblings, parental history of asthma, breastfeeding, daycare attendance, pre/postnatal tobacco smoke exposure, sign(s) of dampness, and presence of pets at home.c: Association was adjusted for gender, socio-economic status, parental history of allergy, breastfeeding, pre/postnatal tobacco smoke exposure, gas heating, cockroaches, infant's mattress age, family events, and number of episodes of lower respiratory infections.d: PLS imputation with two components.Associations between environmental risk factora including missing values, and health outcomes, by different methods handling missing values (OR [95% CI or 95% Cr]).