Table 5. Model-estimated mean change in CD4 cell count and weight after initiation of ART, by baseline WHO stage (n = 404).

Measures of clinical and Biological Status	Between 0 to 6 mo Mean (95% CI)	Between 6 to 24 mo Mean (95% CI)
Weight change (kg)
WHO Stage I	1.8 (0.6–3.0)	0.5 (−3.8 to 4.7)
WHO Stage II	1.8 (1.0–2.6)	1.0 (−1.3 to 3.3)
WHO Stage III/IV	4.4 (3.5–5.2)	1.8 (−0.2 to 3.7)
CD4 cell count (cells/µl)
WHO Stage I	96.7 (69.4–124.1)	126.0 (−9.6 to 261.5)
WHO Stage II	94.0 (76.1–111.7)	79.1 (14.2–144.0)
WHO Stage III/IV	128.0 (108.7–147.3)	128.9 (65.0–192.7)

Models also control for site, age, gender, and ART regimen (AZT-containing and/or NVP-containing). CD4 model also controls for baseline weight, dichotomized at the gender-specific median. Excludes 30 patients who either died or were transferred prior to the 6-mo visit/measurement.