Table 3.
Factors associated with the use of NVP in the first ART regimen using a log-link Poisson model with robust standard errors.
| Factor | Risk ratio | 95% Confidence interval | P value |
|---|---|---|---|
| Male sex* | 0.95 | 0.93-0.97 | < 0.01 |
| Calendar year of ART initiation (per 2 years) | 0.94 | 0.89-0.99 | 0.03 |
| Country | |||
| Kenya | ref | ||
| Uganda | 0.71 | 0.60-0.84 | < 0.01 |
| Tanzania | 1.06 | 1.01-1.12 | 0.01 |
| Age at ART initiation (years) | |||
| Quartile 1 (18-31) | Ref. | ||
| Quartile 2 (32-37) | 0.98 | 0.96-1.00 | 0.04 |
| Quartile 3 (38-43) | 0.97 | 0.95-1.00 | 0.04 |
| Quartile 4 (44-88) | 0.98 | 0.96-1.01 | 0.14 |
| WHO stage at ART initiation+ | |||
| Stage 1 | Ref. | ||
| Stage 2 | 1.02 | 0.99-1.05 | 0.09 |
| Stage 3 | 0.98 | 0.96-1.01 | 0.46 |
| Stage 4 | 0.91 | 0.70-0.86 | < 0.01 |
| Pre-therapy CD4 level ± | |||
| ≤ 50 cells/mm3 | Ref. | ||
| 51-100 cells/mm3 | 1.04 | 1.02-1.08 | < 0.01 |
| 101-200 cells/mm3 | 1.07 | 1.00-1.13 | 0.02 |
| > 200 cells/mm3 | 1.03 | 0.99-1.07 | 0.14 |
| Presence of tuberculosis | 0.72 | 0.70-0.75 | < 0.01 |
Each factor is adjusted for all other factors in the table.
* Missing in 106 (0.2%)
+ Missing in 2648 (5.4%)
± Missing in 7283 (15.0%)