Table 12. Cox proportional hazards regression analysis for predictors of immunological failure among patients on anti-retroviral therapy (n = 1,282).
| Unadjusted | adjusted | |||
|---|---|---|---|---|
| Covariate | Coefficient | P value | Coefficient | P value |
| Age | 0.0058875 | 0.405 | ||
| Gender | 0.1542597 | 0.255 | ||
| WHO Stage | 0.2956083 | 0.037 | 0.2840678** | 0.045 |
| Baseline CD4 cell count (cells/mm 3 ) | 0.0029745 | 0.000 | 0.0029061*** | 0.000 |
| Tuberculosis | -0.0218439 | 0.970 | ||
| Adherence* | 0.1445758 | 0.451 | ||
* Adherence to medication refill.
** Equivalent to hazard ratio of 1.33.
*** Equivalent to hazard ratio of 1.34 per 100 increase of CD4 cell count.