Table 1

Characteristics of children by infant feeding history

	Never BF (n=170)	Exclusive BF <4 months (n=514)	Exclusive BF ⩾4 months (n=359)

% ⩾1 non-Hispanic parent^1-150	69.4	82.7	92.2
% ⩾16 years maternal schooling^1-150	5.3	18.7	24.2
% mother smoked in child's infancy^1-150	29.8	28.0	16.7
% with ⩾2 siblings or attending day care with ⩾6 other children	36.6	28.2	26.5
% ever maternal MD asthma	7.2	11.4	11.6
% of mothers with current asthma symptoms	2.4	4.8	5.7
% paternal MD asthma	16.6	12.1	11.4