Dog exposure in infancy decreases the subsequent risk of frequent wheeze but not of atopy

Kaplan-Meier survival estimates for frequent wheezing, by indoor dog exposure in infancy. P value is unadjusted (log-rank test).

Kaplan-Meier survival estimates for frequent wheezing among children without (A ) and children with (B ) parental histories of asthma, by indoor dog exposure in infancy. P values are unadjusted (log-rank test).

Kaplan-Meier survival estimates for frequent wheezing, by indoor dog exposure throughout childhood. Groups: No dogs, no dogs at enrollment or thereafter; Dogs removed by yr 3, dogs present at enrollment but removed by year 3; Dogs removed by yr 6, dogs at enrollment but removed by year 6; Dogs remain, Dogs at enrollment and thereafter. P value is unadjusted (log-rank test).