TABLE 2.

Unadjusted and adjusted associations of SHINE breastfeeding intervention exposures on breastfeeding outcomes, using the rural 2015 Zimbabwe Demographic Health Survey as comparison¹

	Late initiation (95% CI)		Early mixed feeding (95% CI)		Late mixed feeding (95% CI)
SHINE breastfeeding intervention exposure	Unadjusted IRR	Adjusted IRR	Unadjusted IRR	Adjusted IRR	Unadjusted IRR	Adjusted IRR
Enrolled in SHINE	0.37 (0.31, 0.44)	0.35 (0.27, 0.44)	0.55 (0.42–0.71)	0.45 (0.32–0.65)	0.17 (0.15–0.20)	0.21 (0.17–0.26)
Received 1st lesson, 7-mo pregnancy	0.46 (0.39, 0.55)	0.47 (0.37, 0.60)	0.60 (0.48–0.74)	0.59 (0.44–0.80)	0.25 (0.22–0.30)	0.33 (0.27–0.41)
Received 2nd lesson, 1 w postpartum			0.72 (0.57–0.90)	0.65 (0.49–0.88)	0.23 (0.20–0.27)	0.30 (0.25–0.37)
Received 3rd lesson, 1 mo postpartum			0.62 (0.49–0.78)	0.56 (0.41–0.76)	0.22 (0.19–0.25)	0.29 (0.24–0.36)
Received 4th lesson, 3 mo postpartum					0.21 (0.18–0.24)	0.28 (0.23–0.35)

¹Models were adjusted for potential confounders as described in the methods. These differed by outcome. For late initiation: institutional delivery, marital status, believes intimate partner violence may be justifiable, HIV status, infant sex. For early mixed feeding: marital status, believes intimate partner violence may be justifiable, maternal height, infant birth weight, sex, and infant age at survey. For late mixed feeding: believes intimate partner violence may be justifiable, maternal age, schooling and HIV status, infant birth weight, sex, and infant age at survey. All variables were retained in the final model regardless of statistical significance. IRR, incident rate ratio; SHINE, Sanitation Hygiene Infant Nutrition Efficacy study.