Table 1. Characteristics of the 4 participating clinics.

	Nigeria 1 [BA]	Nigeria 2 [EV]	Zambia [MW]	Uganda [AM]
Hospital or community	Hospital	Hospital	Community	Hospital
Public or private	Public	Public	Public	Public
HIV screening	Separate clinic	In clinic	In clinic	In clinic
Number of patients per month	500	4200	1200	1200
Number of doctors	6	50	1	2
Number of nurses	10	65	15	10
Number of allied health professionals	21	45	6	6
Access to HIV clinical guidelines	Yes, National, Electronic	Yes, National, Electronic and paper	Yes, National, Paper	Yes, National, Electronic and paper
CD4 count	Yes, each 3 months	Yes, each 3 months	In central lab, each 6 months	Yes, transported to lab, each 6 months
Viral load	Yes, each year	Yes, on referral, occasionally	Yes, on referral, when indicated	Yes, each 6 months for adolescents, yearly for adults
Drugs available free	All ART, Co-trimoxazole	All	All (IDV and ATV not free)	All
CD4 to start treatment	<350	<350	<350	<350
Referral	Yes, TB	Yes, complicated eg multi-drug resistance	Yes, if fail treatment	Yes, patients with other medical conditions

ART antiretroviral therapy

IDV indinavir

ATV atazanavir