Cox-Proportional Hazard Semiparametric Gamma Frailty
Covariates ρ(rho) χ2 p-value ρ(rho) χ2 p-value
Mode of Delivery (SVD)            
CS -0.139721 3.21E+00 0.0733 -0.1564 4.05E+00 0.05141
ANC(No)            
Yes -0.041893 2.51E-01 0.6165 0.0024 8.54E-04 0.9767
Gravidity (1)            
2 - 5 -0.004627 2.79E-03 0.9579 -0.0103 1.32E-02 0.9085
6 - 10 -0.069094 6.22E-01 0.4302 -0.0317 1.35E-01 0.7128
HIV status(No)            
Yes 0.065262 6.05E-01 0.4366 0.073 7.40E-01 0.3898
Weight of Infant (<1600)            
[1600, 2500] -0.03918 2.70E-01 0.6034 -0.0181 5.10E-02 0.8214
Multiple Pregnancy (No)            
Yes -0.018613 4.39E-02 0.8341 0.022 6.14E-02 0.8042
RDS (No)            
Yes 0.014764 3.36E-02 0.8545 -0.0177 5.34E-02 0.8172
PNA (No)            
Yes -0.005023 3.49E-03 0.9529 -0.0211 5.94E-02 0.8075
Anemia(No)            
Yes -0.009122 1.11E-02 0.9161 0.0299 1.11E-01 0.7386
GAvsWeight(SGA)            
AGA 0.029036 1.23E-01 0.7256 0.0118 1.98E-02 0.8881
LGA 0.069587 5.99E-01 0.4388 0.0569 4.00E-01 0.527
Breast Feed Initiated(Not atall)            
<1 Hr -0.000616 5.09E-05 0.9943 0.0388 2.11E-01 0.6462
[1, 2] Hr 0.106853 1.37E+00 0.2425 0.1509 2.97E+00 0.0847
>2 Hr 0.044064 2.43E-01 0.6221 0.0934 1.11E+00 0.2917
Other Milk 0.02515 7.54E-02 0.7836 0.0244 7.57E-02 0.7831
GLOBAL NA 8.48E+00 0.9334 NA 1.36E+01 0.8861
Categories in the bracket are reference categories.
Table 8: Schoenfeld Residuals test for proportionality assumption of each covariate and overall model of the stratified Cox Proportional Hazard and Semiparametric Gamma Frailty Models.