Table 2.
Univariate and Multivariate Cox proportional hazard models examining the association between being Aboriginal and time to a CD4 cell increase of 100 above baseline
| Variable | Unadjusted HR | Adjusted HR |
| (95% CI) | (95% CI) | |
| Aboriginal (Yes versus No) | 0.85 (0.65, 1.11) | 0.95 (0.73, 1.23) |
| Plasma HIV viral load (per log 10 increase) | 1.21 (1.06, 1.38) | 1.27 (1.12, 1.44) |
| CD4 cell count (per 100 decrease) | 0.96 (0.92, 1.00) | -- |
| Gender (Female versus Male) | 1.85 (1.30, 2.64) | 1.28 (0.94, 1.74) |
| Age | 1.00 (0.99, 1.01) | 0.99 (0.98, 1.00) |
| Physician experience (per 10 patients) | 1.03 (1.02, 1.04) | 1.01 (1.01, 1.02) |
| Completed high-school (Yes versus No) | 1.03 (0.86, 1.24) | -- |
| Income (<$10,000 versus ≥ $10,000) | 0.83 (0.68, 1.00) | 0.97 (0.81, 1.17) |
| Baseline Combination (PI versus NNRTI) | 0.81 (0.66, 1.01) | 0.79 (0.62, 1.01) |
| Adherence (>= 95% versus <95%) | 1.73 (1.39, 2.14) | 1.57 (1.28, 1.94) |
| AIDS diagnosis (Yes versus No) | 0.96 (0.75, 1.22) | -- |
| History of IDU (Yes versus No) | 0.79 (0.65, 0.96) | 0.92 (0.75, 1.13) |
| Year of initiation of therapy | ||
| 1996 | 1.00 (--) | 1.00 (--) |
| 1997 | 0.95 (0.72, 1.26) | 1.07 (0.81, 1.40) |
| 1998 | 0.94 (0.69, 1.27) | 1.14 (0.84, 1.55) |
| 1999 | 1.03 (0.75, 1.40) | 1.10 (0.78, 1.55) |
Notes: The symbol – means that variable was not included in the analysis