Table 3. Determination of timely follow-up CD4 testing by follow-up period in months among patients on anti-retroviral therapy (N = 1,321).

Follow-up Month	Expected number of CD4 tests	Number of follow-up CD4 tests provided	Per cent (%) CD4 tests provided
0	1321	1321	100.00
6	1317	610	46.31
12	1262	417	33.04
24	1053	179	17.00
36	842	132	15.68
48	628	108	17.20
60	459	68	14.81
72	271	40	14.76
84	136	10	7.35
Total	7289	2885	40.58