Table 4: Cox proportional hazards regression-determinants of virological failure.

Variable e Hazard ratio 95% CI (HR) P-value
Age group
Paediatric (< 15 years) (base)
Adult (≥ 15 years) 1.61 [1.19; 2.16] 0.002*
Gender
Female (base)
Male 1.04 [0.89; 1.21] 0.609
Regimen type
EFV (base)
NVP 0.82 [0.70; 0.96] 0.012*
HIV stage
Stage 1 (base)
Stage 2 0.94 [0.76; 1.16] 0.560
Stage 3 0.94 [0.77; 1.14] 0.517
Stage 4 0.92 [0.70; 1.22] 0.586
Any non-communicable disease?
No (base)
Yes 1.08 [0.87; 1.34] 0.466
Adherence to ART
No (base)
Yes 0.74 [0.62; 0.87] < 0.001*
Baseline BMI
Normal (base)
Obese 0.95 [0.76; 1.19] 0.671
Overweight 1.05 [0.86; 1.28] 0.628
Underweight 1.09 [0.82; 1.46] 0.540

*significant. Shows Cox Proportional Hazards regression model evaluating the adjusted effect of the patient's baseline characteristics on the risk of virological failure at the next time.