Study clinic pair Duration of operation* Active patients Patients on food aid (%) Percent sampled 12 month survival† 18 month survival†
Among clinic population Among food assistance recipients
Kanyama 64 4296 1600 (37%) 1.2% 3.1% 0.94 0.93
Matero Reference 60 5355 n/a 0.93% n/a 0.94 0.93
Chawama 41 3875 700 (18%) 1.3% 7.1% 0.91 0.90
Chipata       54 4543 n/a 1.1% n/a 0.86 0.85
George 60 4097 680 (17%) 1.2% 7.4% 0.90 0.88
Chilenje 59 3273 n/a 1.5% n/a 0.93 0.91
Mtendere 64 2896 708 (24%) 1.7% 7.1% 0.89 0.88
Bauleni 56 1400 n/a 3.6% n/a 0.91 0.89
Food assistance clinics in bold italics; table stratified by study/control clinic pairs. The criteria for matching food assistance and control clinics were duration of operation, population of active patients, and 12 and 18 month survival. All clinics were public-sector facilities serving low-income areas of Lusaka, and similarity of the local environment was also considered in selecting final pairs. *Through August 2009
†Kaplan-Meier estimate of the proportion of patients surviving at 12 and 18 months post-ART initiation
Table 1: Characteristics of study clinic pairs.