Associations of BMI, fat mass, and lean mass with current asthma, non-atopic asthma, and atopic asthma in children at 7½ and 9 y.

†Adjusted for gender, birth weight, pre- and postnatal maternal exposure to smoking, and maternal education.aControls were children with no current asthma at 7½ y.bChi-squared test comparing estimate effects for non-atopic and atopic asthma.‡Test for the null hypothesis that the RR in males is the same as the RR in females (likelihood ratio test).*Based on residuals from regression models of mass measure (fat/lean mass) on height, height squared, and gender. Fat mass was divided by two so that its standard deviation was similar to that of BMI and lean mass.cControls were children with no current asthma at 9 y.