Daycare attendance, breastfeeding, and risk of asthma in the prospective MoBa and DIPP birth cohorts

Background

Daycare attendance and breastfeeding have been associated with asthma risk. However, it remains unclear whether the association between breastfeeding and asthma risk depends on daycare attendance. We investigated whether daycare attendance acts as a modifier in the relationship between breastfeeding and asthma risk.

Methods