| 
   
  |  | Group 1998(N=307) | Group 2006(N=236) | p |  
  | Male gender, % | 73.0 | 75.3 | 0.53 |  
  | Mean age ±SD, years | 39.1±9.8 | 41.0±10.7 | 0.03 |  
  | Drug users, % | 40.1 | 30.4 | <0.001 |  
  | HCV/HBV coinfection, % | 38.6 | 41.0 | 0.87 |  
  | Mean CD4 T-cells, mm3 | 343 ± 314 | 244 ± 174 | <0.001 |  
  | Baseline CD4 T-cells < 100, % | 17.3 | 20.8 | 0.30 |  
  | Baseline CD4 T-cells < 200, % | 33.6 | 40.7 | 0.09 |  
  | Baseline CD4 T-cells < 350, % | 55.7 | 80.5 | <0.001 |  
  | Mean log10 HIV-RNA | 4.56 ± 0.97 | 4.91 ± 0.96 | 0.001 |  
  | Mean AIDS progression risk ±SD | 6.7 ± 9.6 | 10.2 ± 11.2 | 0.002 |  
  | Glycemia mg/dL (95% C.I.) | 90.4 (88.0-92.8) | 88.1 (85.0-91.2) | 0.27 |  
  | Triglycerides mg/dL (95% C.I.) | 159 (135-184) | 147 (135-159) | 0.34 |  
  | Cholesterol mg/dL (95% C.I.) | 168 (160-175) | 162 (156-168) | 0.28 |  |