TABLE 6

Breastfeeding Outcomes at 3 Weeks to 6 Months

StudyCategoryType of BreastfeedingTime PointInterventionControlRR (95% CI); P
n/N%n/N%
Sciacca et al, 199528,29Breast pumps, gifts, vouchers, football tickets, and raffle giftsExclusive6 wk13/2650.07/2924.12.07 (0.98–4.39); .047
Sciacca et al, 199528,29Breast pumps, gifts, vouchers, football tickets, and raffle giftsAny6 wk21/2680.89/2931.02.60 (1.47– 4.62); <.001
Bliss et al, 199718aBreast pumpsExclusive6 wk240/41957.3196/36054.41.05 (0.93–1.19); .43
Bliss et al, 199718aBreast pumpsPartial6 wk87/41920.888/36024.40.85 (0.65–1.10); .22
Bliss et al, 199718aBreast pumpsExclusive4 mo141/40335.0123/34635.60.98 (0.81–1.20); .87
Bliss et al, 199718aBreast pumpsPartial4 mo79/40319.653/34615.31.28 (0.93–1.76) ; .12
Bliss et al, 199718aBreast pumpsExclusive6 mo90/38823.379/33123.90.97 (0.75–1.27); .83
Bliss et al, 199718aBreast pumpsPartial6 mo59/38815.242/33112.71.20 (0.83–1.73); .33
Dungy et al, 199221aBreast pumpsUnclear4 wk24/4454.515/4334.91.56 (0.96–2.55); .065
Dungy et al, 199221aBreast pumpsUnclear6 wk20/4445.513/4330.21.50 (0.86–2.63); .14
Dungy et al, 199221aBreast pumpsUnclear8 wk16/4436.410/4323.31.56 (0.80–3.05); .18
Rasmussen et al, 201126Breast pumps, electricExclusive30 d2/13155/12420.37 (0.09–1.56); .14
Rasmussen et al, 201126Breast pumps, manualExclusive30 d3/9335/12420.80 (0.26–2.50); .70
Rasmussen et al, 201126Breast pumps, electricPartial30 d3/13238/12670.35 (0.12–1.01); .028
Tuttle and Dewey, 199527Gift items and vouchersUnclear3–6 wk11/6317.519/3495.43.21 (1.60–6.41); <.001
Thomson et al, 201230Gift items and vouchersAny6–8 wk57/9460.6119/17269.20.88 (0.72–1.06); .16
Pugh and Milligan, 199825Household tasksUnclear6 mo15/3050.08/3026.71.88 (0.94–3.75); .063
  • CI, confidence interval; RR, relative risk.

  • a Control group received infant formula (a potential disincentive to breastfeed).