Table 4 Association between CD4 percentage, plasma viral load measured in 1991 and mortalityover a 18 year follow-up among HIV-2 infected subjects.
| Â | Â | Â | Univariable | Multivariable a | ||
|---|---|---|---|---|---|---|
| Â | Number | Mortality rate per 100 person-years (95% CI) | Rate ratio (95% CI) | Â | Rate ratio (95% CI) | P value |
Plasma viral load b , copies per ml | Â | Â | Â | Â | ||
   ≤ 100 | 15/48 (31) | 2.4 (1.4, 4.0) | 1.0 | <0.001 | 1 | <0.001 |
   101-10,000 | 31/60 (52) | 4.9 (3.5, 7.0) | 2.0 (1.1, 3.8) |  | 2.0 (1.0, 4.2) |  |
   >10,000 | 18/22 (82) | 10.4 (6.6, 16.5) | 4.3 (2.2, 8.6) |  | 5.6 (2.5, 12.5) |  |
CD4 percentage c | Â | Â | Â | Â | Â | |
   ≥ 28% | 26/70 (37) | 3.1 (2.1, 4.6) | 1.0 | 0.007 | 1 | 0.2 |
   <28% | 34/55 (62) | 6.3 (4.5, 8.8) | 2.0 (1.2, 3.3) |  | 1.4 (0.8, 2.5) |  |