Covariate Mean t-statistic p-value
Intervention N=68 Control N=107
Body mass index at baseline, kg/m2 21.0 20.6 0.65 0.52
Age, years 43 41 1.26 0.21
Female 0.74 0.77 -0.38 0.71
College education 0.13 0.08 0.39 0.38
Primary education 0.56 0.46 0.05 0.28
Secondary education 0.23 0.26 0.93 0.68
Divorced or separated 0.07 0.03 0.81 0.42
Widowed 0.20 0.14 0.77 0.44
Never married 0.07 0.09 -0.53 0.60
Travel from the patient’s residence to the clinic <1 hour 0.98 0.98 0.35 0.73
WHO stage III and IV of HIV disease at baseline 0.51 0.55 -0.49 0.62
Participant is unemployed 0.72 0.78 -0.75 0.45
Household does not own a house 0.71 0.69 0.19 0.85
Number of HIV-infected household members (n) 2.89 2.93 -0.16 0.87
Number of disabled household members (n) 0.10 0.17 -1.11 0.27
Household size (n) 4.80 4.36 1.44 0.15
Number of durable assets owned (n) 1.89 1.95 -0.21 0.84
Household uses charcoal as fuel source 0.85 0.84 0.14 0.89
Total population in locality/area served by clinic (n) 97,000 98,000 -0.38 0.71
*Data expressed as a proportion unless otherwise specified. Total N for matching is 175 reduced to 168 observations after imposing common support (7 treated cases not on support). Overall estimates, N=61 (intervention), 107 (control).
Table 3: Propensity score estimation: mean differences of covariates after matching.
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