Table 2. Site characteristics at time of data abstraction.

Site	Kasavubu	Ndjili	Lubumbashi	Matadi	Kananga	Mbandaka
Number of patients in the analysis (N = 1450)	236	231	246	248	245	244
Type of site	urban	urban	urban	urban	semi-urban	semi-urban
Number of patients on ART	2713	1015	1495	1593	577	468
Number of consultations per day	80–100	30–40	40–50	30–40	20–30	20–30
Number of providers	25	10	15	14	8	8
Patient medical record system	electronic	electronic	electronic	electronic	manual	manual
Number of supervisions during the last 6 months	6	6	4	4	2	1
CD4 availability at site	yes	yes	yes	no*	no	no
CD4 cell count
Median	148	126	141	189	NA	NA
IQR	68–230	62–234	64–204	100–299	NA	NA
Missing	127	78	97	151	NA	NA

^*Done at a private clinic in Matadi.