Table 1.

Duration of EBF in relation to HIV-infection, the 12-month follow-up period among infants born to HIV-infected mothers^a

Outcome	HIV+ve	Univariate			Multivariateb
		n	RR (95% CI)	p-value	RR (95%CI)	p-value
HIV infection
0–6 months	65	1629	0.82 (0.71–0.95)	0.008	0.84(0.72–0.98)	0.03
7–12 months	7	132	0.83 (0.63–1.09)	0.18	–c
0–12 months	72	1629	0.83 (0.73–0.94)	0.003	0.82(0.72–0.94)	0.005

^aTime-varying Cox-PH regression models were used to estimate the RR and its 95% CIs.

^bAdjusted for maternal age, education level, employment, daily food expenditure, marital status, number of prior pregnancy, maternal WHO stages, CD8 T-cell counts, lymphocyte counts, ARV treatment during pregnancy, maternal time-varying BMI, hemoglobin level, maternal CD4 T-cell counts, child gender, birth weight and preterm birth.

^cRR could not be estimated in the multivariate model because of the small number of events in this period and because EBF rates were lower after 4 months.