Maternal health behaviors
Participants who enroll into CHAMPS while pregnant self-report: duration of breastfeeding at 1, 6, and 12 months; infant sleep positioning at 1, 6, and 12 months; contraception use at 1, 6, and 12 months; and repeat pregnancy within 12 months of follow-up. The proportion of participants who report these behaviors will be compared between the 2 study arms.