Table 5.

Parameter Estimation for Weibull AFT Model

Parameter	Estimate	Exp(Coef)	Std. Error	z	P
Intercept Age Weight Baseline Cd4+	7.220 –0.184 -0.015 –0.001	4.15 0.832 0.985 0.999	1.74 0.151 0.097 0.00232	0.082 –1.22 -1.52 –0.06	0.222 0.128 0.956
ART start at ANC L&D Known HIV on ART Not on ART Partner test Positive Negative Not done	−0.341 0 0.098 0 0.556 0.438 0	0.711 … 1.103 … 1.744 1.550 …	0.202 … 0.245 … 0.234 0.203 …	−3.69 … 0.40 … 2.38 2.16 …	0.009 … 0.689 … 0.017 0.031 …
Marital status Married Unmarried Clinical stage stage I Stage II Stage III Stage IV Regimen classTDF-3TC-EFV AZT-3TC-EFV others*	−0.111 0 1.04 0.819 0.970 0 –0.138 -0.320 0	0.8949 … 2.829 2.268 2.6381 … 0.871 0.726 …	0.200 … 0.443 0.426 0.924 … 0.282 0.309 …	−0.56 … 2.34 1.92 2.14 … -0.49 –1.04 …	0.578 … 0.019 0.055 0.033 … 0.625 0.300 …
Educational Level Illiterate Literate Place of Delivery at home Health Insti Residence Rural Urban Mid-upper arm Circumference Severe Moderate Normal	0.226 0 –0.541 0 0.750 0 3.43 3.750 0	1.254 … 0.582 … 2.117 … 30.877 42.521 …	0.196 … 0.233 … 3.390 … 1.440 1.860 …	2.15 … -2.32 … 0.00 … 2.38 2.02 …	0.021 … 0.020 … 0.998 … 0.017 0.044 …
Age: weight Age: MUAC(severe) Age: MUAC(moderate) Age: MUAC(normal) Log(scale)	0.005 –0.0893 -0.110 0 –1.06	1.005 0.915 0.896 … 0.346	0.004 0.051 0.067 … 0.187	1.46 –1.78 -1.63 … -5.64	0.144 0.076 0.102 … <0.001
Scale= 0.348

Note: Others* include AZT-3TC-NVP.