Impact of the Umoyo mother-infant pair model on HIV-positive mothers’ social support, perceived stigma and 12-month retention of their HIV-exposed infants in PMTCT care: evidence from a cluster randomized controlled trial in Zambia

Table 8 Distribution (mean and 99% confidence interval (CI)) and comparison of outcomes for mothers’ Social Support and Stigma Scores

	Pre implementation		Post implementation		Difference in difference	P value from t test
	Control	Intervention	Control	Intervention	Difference in difference	P value from t test
Total facilities^a	11	11	11	11
Social Support Scale (0–2)	1.60 (1.39, 1.82)	1.30 (1.01, 1.58)	1.46 (1.22, 1.69)	1.37 (0.91, 1.84)	0.22 (− 0.36, 0.81)	0.3
Stigma enacted (0–2)	0.08 (0.001, 0.15)	0.12 (0.06, 0.18)	0.17 (0.07, 0.27)	0.07 (− 0.004, 0.15)	− 0.14 (− 0.29, 0.01)	0.02
Stigma HCW (0–2)	0.49 (0.30, 0.69)	0.64 (0.47, 0.81)	0.58 (0.44, 0.73)	0.49 (0.34, 0.64)	− 0.24 (− 0.51, 0.03)	0.02
Internalized stigma (0–2)	0.53 (0.30, 0.77)	0.44 (0.29, 0.59)	0.34 (0.19, 0.48)	0.26 (0.09, 0.42)	0.01 (− 0.29, 0.32)	0.9

^aRemoved the facilities that do not have data in the pre- or post-intervention period
HCW health care worker

ISSN: 1745-6215