Table 5.
Multivariate Cox Regression Model for Hazard of Hospitalization (PCSS and MCSS Numeric)
| Variablea | Model 4: PCSS Model | Model 5: MCSS Model | Model 6: Combined PCSS and MCSS Model | |||
|---|---|---|---|---|---|---|
| HR | 95% CI | HR | 95% CI | HR | 95% CI | |
| PCSS, 5 Unit Increments | 0.87 | 0.83–0.92 | 0.88 | 0.84–0.93 | ||
| MCSS, 5 Unit Increments | 0.91 | 0.87–0.96 | 0.94 | 0.89–0.99 | ||
| CD4 Count | ||||||
| < 200 cells/mm3 | 2.76 | 1.90–4.01 | 2.96 | 2.04–4.29 | 2.73 | 1.88–3.97 |
| 200–349 cells/mm3 | 1.66 | 1.23–2.23 | 1.67 | 1.24–2.25 | 1.65 | 1.22–2.23 |
| 350–499 cells/mm3 | 1.38 | 1.07–1.80 | 1.37 | 1.05–1.77 | 1.38 | 1.07–1.79 |
| > 499 cells/mm3 | 1.0 | – | 1.0 | – | 1.0 | – |
| Plasma Viral Load > 50 Copies/mL | 1.86 | 1.49–2.32 | 1.89 | 1.52–2.36 | 1.86 | 1.49–2.31 |
| Mental Comorbidity | 1.31 | 1.05–1.64 | 1.28 | 1.02–1.61 | 1.23 | 0.97–1.54 |
| AIDS Diagnosis | 1.34 | 0.99–1.82 | 1.48 | 1.09–2.00 | 1.34 | 0.99–1.82 |
| Rank | ||||||
| Civilian/Retired | 2.21 | 1.35–3.61 | 2.14 | 1.31–3.49 | 2.15 | 1.32–3.52 |
| Enlisted | 1.28 | 0.80–2.04 | 1.16 | 0.73–1.85 | 1.27 | 0.79–2.02 |
| Officer | 1.0 | – | 1.0 | – | – | – |
| Time Since HIV (Per year) | 0.94 | 0.92–0.96 | 0.95 | 0.93–0.96 | 0.94 | 0.93–0.96 |
aAll variables are time-varying