Table 1

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

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

Liu et al. AIDS Research and Therapy 2006 3:6   doi:10.1186/1742-6405-3-6
Open Data