TABLE 3.

Association Between Clinic Characteristics and Attrition

	Early Follow-Up (≤6 Months)				Late Follow-Up (>6 Months)
	No. Events	Rate (Per 100 Person-Years)	Attrition, aHR* (95% CI)	P	No. Events	Rate (Per 100 Person-Years)	Attrition, aHR* (95% CI)	P
Clinic model
Vertical	1488	57.70	1.00 (ref)	0.87	431	15.13	1.00 (ref)	0.03
Integrated	1226	55.37	0.97 (0.71 to 1.33)		430	21.83	1.75 (1.04 to 2.94)
Clinic location
Rural	996	60.02	1.00 (ref)	0.30	401	23.02	1.00 (ref)	0.02
Urban	1721	58.83	0.84 (0.61 to 1.17)		459	14.94	0.57 (0.35 to 0.91)
Clinic experience
First 6 months	150	76.00	1.00 (ref)	0.08	—	—	—	—
Post first 6 months	2558	55.79	0.71 (0.49 to 1.04)		—	—	—

Early attrition—fFirst 6 months of patient follow-up; late attrition—post first 6 months of patient follow-up.

^*Adjusted for pre-ART CD4 count, WHO stage, age, education, and pharmacy staff burden; CD4 count, education, and pharmacy staff burden allowed to have time time-varying effects in early/late follow-up.