| 
      
        | Model | R | R2 | ΔR2 | ΔF | df | β |  
        | Step 1: Immune status | 0.01 | <0.01 | <0.01 | 0.16 | 1,99 |  |  
        | CD4cell count |  |  |  |  |  | -0.13 |  
        | Step 2: Disease status | 0.03 | <0.01 | <0.01 | 0.10 | 2,98 |  |  
        | CD4cell count |  |  |  |  |  | -0.02 |  
        | Viral load |  |  |  |  |  | -0.03 |  
        | Step 3:  Demographic | 0.22 | 0.05 | 0.05 | 1.12 | 5,94 |  |  
        | CD4cell count |  |  |  |  |  | -0.05 |  
        | Viral load |  |  |  |  |  | -0.06 |  
        | Age |  |  |  |  |  | -0.07 |  
        | Gender |  |  |  |  |  | 0.19 |  
        | Race (Black) |  |  |  |  |  | -0.06 |  
        | Race (White) |  |  |  |  |  | -0.08 |  
        | Step 4: Baseline Adherence | 0.62 | 0.38 | 0.34 | 50.31 | 7,93 |  |  
        | CD4cell count |  |  |  |  |  | -0.05 |  
        | Viral load |  |  |  |  |  | 0.03 |  
        | Age |  |  |  |  |  | -0.06 |  
        | Gender |  |  |  |  |  | 0.08 |  
        | Race (Black) |  |  |  |  |  | 0.11 |  
        | Race (White) |  |  |  |  |  | -0.03 |  
        | Medication adherence    at baseline |  |  |  |  |  | -0.60*** |  
        | Step 5: Active patient involvement | 0.65 | 0.42 | 0.04 | 5.65 | 8,92 |  |  
        | CD4cell count |  |  |  |  |  | -0.08 |  
        | Viral load |  |  |  |  |  | 0.05 |  
        | Age |  |  |  |  |  | -0.03 |  
        | Gender |  |  |  |  |  | 0.07 |  
        | Race (Black) |  |  |  |  |  | 0.11 |  
        | Race (White) |  |  |  |  |  | -0.01 |  
        | Medication adherence    at baseline |  |  |  |  |  | -0.62*** |  
        | Active patient    involvement |  |  |  |  |  | 0.20* |  |