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. Author manuscript; available in PMC: 2010 Jan 5.
Published in final edited form as: AIDS. 2008 Nov;22(17):2349–2357. doi: 10.1097/QAD.0b013e328312c740

Table 2.

Probability of remaining free from HIV infection and death according to infant feeding practices implemented at birth (n=1,160, with information on all variables).

Age 3 Months Age 6 Months Age 9 Months Age 12 Months Age 18 Months
Numbers at risk 908 841 766 703 592
Probability of remaining free from HIV-infection and death (95%CI)1
 Exclusive Breastfeeding group (n=937) 0.82 (0.79–0.84) 0.79 (0.77–0.82) 0.78 (0.75–0.80) 0.76 (0.74–0.79) 0.75 (0.72–0.78)
 Mixed feeding group (n=105) 0.84 (0.75–0.89) 0.81 (0.71–0.87) 0.81 (0.71–0.87) 0.81 (0.71–0.87) 0.79 (0.70–0.86)
 Replacement feeding group (n=118) 0.85 (0.77–0.90) 0.82 (0.74–0.88) 0.81 (0.73–0.87) 0.80 (0.72–0.87) 0.80 (0.72–0.87)
Probability of survival (95%CI)2
 Exclusive Breastfeeding group (n=937) 0.96 (0.95–0.97) 0.93 (0.91–0.94) 0.90 (0.89–0.92) 0.89 (0.86–0.90) 0.86 (0.83–0.88)
 Mixed feeding group (n=105) 0.98 (0.92–0.99) 0.97 (0.91–0.99) 0.96 (0.89–0.98) 0.94 (0.86–0.97) 0.87 (0.78–0.93)
 Replacement feeding group (n=118) 0.96 (0.91–0.99) 0.91 (0.84–0.95) 0.91 (0.84–0.95) 0.89 (0.81–0.93) 0.87 (0.78–0.92)
1

Log-Rank test between the 3 groups, p=0.43

2

Log-Rank test between the 3 groups, p=0.74

Note

1,193 infants were eligible for this analysis, but 33 infants had not been fed during their first 2 days of life or had missing infant feeding data and were excluded from this analysis.