Cox's regression analysis: variables independently and significantly related to incidence of tuberculosis in a cohort of 872 Amsterdam drug users
| Variable | Relative risk | 95% confidence intervals |
|---|---|---|
| HIV infection2-150 | 12.85 | 3.38, 48.81 |
| Age at entry (y) | ||
| ⩽27 | 1.00 | |
| 28–32 | 3.4 | 0.66, 17.56 |
| ⩾33 | 6.78 | 1.31, 35.04 |
↵2-150 Time dependent variable.