Table 2 Unadjusted and adjusted Hazard Ratio (HRs) of survival at 24 months in the HIV exposed infants of the Essos hospital center PMTCT program

 Exclusive breast feeding

1.35 [0.52-3.49]

0.54

1.16 [0.44-3.08]

0.76

 Mixed feeding

0.31 [0.04-2.42]

0.26

0.44 [0.053-3.74]

0.45

 Exclusive replacement feeding

Ref

Ref

Ref

Ref

 Positive

0.31 [0.11-0.90]

0.032

0.30 [0.08-1.11]

0.071

 Negative

Ref

Ref

Ref

Ref

  > =2500 g

0.70 [0.16-2.96]

0.63

0.93 [0.21-4.12]

0.92

  < 2500 g

Ref

Ref

Ref

Ref

Global Schoenfeld residuals test

0.23