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*
Table 3: Hierarchical Linear Regression with 1 Year Change in Adherence as Dependent Variable.
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