|   | 
  IR-XR post48a | 
  IR-IR post48b | 
  XR-XR post48c | 
  Total | 
    
   
  | Number of patients, n (%) | 
  130 (100) | 
  13 (100) | 
  276 (100) | 
  419 (100) | 
    
   
  | Baseline HIV-1 RNA, copies/mL,d,e n (%) | 
    
   
  | <50 | 
  120 (92.3) | 
  12 (92.3) | 
  263 (95.3) | 
  395 (94.3) | 
    
   
  | ≥50 | 
  10 (7.7) | 
  1 (7.7) | 
  13 (4.7) | 
  24 (5.7) | 
    
   
  | Baseline CD4+ T-cell counts, cells/mm,d | 
    
   
  | n | 
  129 | 
  13 | 
  276 | 
  418 | 
    
   
  | Mean | 
  571.9 | 
  595.0 | 
  559.2 | 
  564.2 | 
    
   
  | SD | 
  202.8 | 
  330.1 | 
  212.8 | 
  213.7 | 
    
   
  | Baseline CD4+ T-cell counts, cells/mm,d n (%) | 
    
   
  | >50 to 200 | 
  2 (1.5) | 
  0 (0.0) | 
  6 (2.2) | 
  8 (1.9) | 
    
   
  | >200 to 350 | 
  13 (10.0) | 
  2 (15.4) | 
  38 (13.8) | 
  53 (12.6) | 
    
   
  | >350 to <400 | 
  11 (8.5) | 
  0 (0.0) | 
  19 (6.9) | 
  30 (7.2) | 
    
   
  | ≥400 | 
  103 (79.2) | 
  11 (84.6) | 
  213 (77.2) | 
  327 (78.0) | 
    
   
  | Missing | 
  1 (0.8) | 
  0 (0.0) | 
  0 (0.0) | 
  1 (0.2) | 
    
   
  | History of AIDS-defining illness, n (%) | 
    
   
  | No | 
  105 (80.8) | 
  8 (61.5) | 
  200 (72.5) | 
  313 (74.7) | 
    
   
  | Yes | 
  25 (19.2) | 
  5 (38.5) | 
  76 (27.5) | 
  106 (25.3) | 
    
  
 Note: IR=immediate-release; NVP=nevirapine; XR=extended-release. 
   a Patients randomized to NVP IR and elected to change to NVP XR after week 48. 
   b Patients randomized to NVP IR and who chose to remain on NVP IR after week 
   48. 
   c Patients randomized to NVP XR who elected to remain on NVP XR after week 48. 
   d Baseline values are calculated as the average of the last 2 measurements prior to 
   the start of randomized treatment. 
 eHIV-1 RNA viral load is based on TaqMan assay results. |