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Table 1 Study Participant Characteristics Before and After Propensity Score Matching. Numbers indicate mean value unless otherwise noted.

From: Assessing the effect of HAART on change in quality of life among HIV-infected women

  Before Matching After Matching
Covariates HAART Naive (N = 555) HAART Users (N = 1271) P-Value HAART Naive (N = 458) HAART Users (N = 458) P-Value
Age at baseline 38.6 38.4 0.42 38.6 38.4 0.75
Education %    <.01    0.30
   Less than high school 39.8 35.5   40.8 39.1  
   Completed high school 33.2 31.2   31.7 29.5  
   College and above 27.0 33.4   27.5 31.4  
Race %    0.02    0.35
   White non-Hispanic 15.1 18.5   16.4 17.5  
   Black non-Hispanic 62.5 53.8   60.7 56.6  
   Hispanic 3.9 3.5   4.1 3.1  
   Others 18.5 24.2   18.8 22.9  
Annual gross income (>$12,000) % 35.0 38.9 0.02 36.9 37.6 0.84
Employment % 26.6 25.3 0.37 21.6 25.5 0.16
Insurance % 40.2 23.4 <.01 26.6 30.8 0.17
CD4+ cell count 533.8 301.9 <.01 339.4 344.9 0.74
Viral Load (log10) 3.7 4.0 <.01 4.2 4.1 0.17
AIDS diagnosis % 36.4 44.3 <.01 43.2 41.9 0.69
Depression % 50.0 47.4 0.11 49.8 49.8 1.00
Number of symptoms 1.3 1.5 0.03 1.5 1.5 0.84
Number of outpatient visit 3.8 5.9 <.01 5.1 4.9 0.71
Number of hospitalizations 0.3 0.3 0.16 0.4 0.3 0.43
Number of medications 2.8 3.8 <.01 3.7 3.4 0.13
Quality of life scores       
   Physical functioning 66.2 64.1 0.03 63.1 65.5 0.23
   Role functioning 74.0 73.0 0.28 74.0 74.1 0.98
   Energy/Fatigue 54.1 53.0 0.20 51.6 53.1 0.39
   Social functioning 72.0 72.0 0.92 73.0 72.2 0.65
   Cognitive functioning 76.7 78.1 0.09 78.6 77.1 0.33
   Pain 69.9 69.5 0.64 70.2 69.1 0.55
   Emotion well-being 59.8 59.9 0.95 59.1 59.0 0.94
   Perceived health index 53.7 51.6 0.01 50.8 52.2 0.40
   Health rating 66.4 68.1 0.02 66.9 67.1 0.89
   Summary score 63.2 62.3 0.19 61.9 62.5 0.65