Table 4. Temporal trends in baseline CD4 count survival and loss to follow-up at 6 months in adults starting ART.

Number of adultsa	80	248	524	3981	3508
Year started on ART	2001	2002	2003	2004	2005
CD4 < 50 cells/µlb,c	51.3 (39.8–62.6)	50.4 (44.0–56.8)	36.8 (32.7–41.1)	24.4 (23.1–25.8)	21.5 (18.8–20.6)
Mortalityc,d	12.7 (6.2–21.8)	11.7 (8.0–16.4)	9.6 (7.2–12.4)	6.0 (5.1–6.6)	6.6 (5.6–7.3)
Loss to follow-upc,e	0.0 (0.0–4.5)	0.4 (0.0–2.2)	1.7 (0.8–3.2)	4.4 (3.7–4.9)	4.7 (3.9–5.3)

ART, antiretroviral therapy; CI, confidence interval.
^a Number starting in year and reaching 6 months of follow-up.
^b Proportion in starting cohort with CD4 counts < 50 cells/µl.
^c Values in parentheses are exact binomial confidence intervals.
^d Mortality = deaths by 6 months / (total in cohort - transfers out by 6-months).
^e Loss to follow-up = losses to follow-up by 6 months / (total in cohort - transfers out by 6 months).