“…Two studies were considered to have .1 incentive intervention arm for the outcome of interest (ie, breastfeeding). 18,26 The incentive components varied across the studies and ranged from a breast pump, 19,23,26 a combination of a breast pump with feeding-related items 18,20,21 or with vouchers, gifts, and entry to a raffle for both parents, 28 to enhanced food packages in the context of WIC, 22 gifts, vouchers, 27,30,31,33 or cash. 24,32 One study provided nonmaterial incentives, such as a home help service for nonnursing tasks.…”