Table 4. Univariate Predictors of Poor WAZ Response From a Cohort of HIV-infected <10 Years Old Children Initiating ART in South Africa, August 2003–December 2008.

	6 Months N = 587		12 Months N = 476
	Odds Ratio [95% CI]	P-value	Odds Ratio [95% CI]	P-value
Age at initiation *		0.005		0.04
Age <1 year	0.47 [0.39–0.77]	0.003	0.60 [0.35–1.02]	0.058
Age 1–3 years	0.64 [0.42–0.99]	0.047	0.58 [0.35–0.97]	0.037
Females	1.21 [0.85–1.72]	0.29	1.23 [0.82–1.85]	0.31
Baseline CD4 %	1.05 [1.02–1.07]	0.0005	1.01 [0.98–1.03]	0.76
Baseline Hemoglobin	1.16 [1.03–1.31]	0.016	1.21 [1.06–1.39]	0.006
TB Co-infection	0.70 [0.49–1.01]	0.056	0.94 [0.61–1.44]	0.77
Chronic Diarrhea	0.54 [0.33–0.91]	0.021	0.69 [0.39–1.22]	0.20
Baseline WAZ	1.47 [1.30–1.67]	<0.0001	1.53 [1.33–1.77]	<0.0001
Opportunistic Infection	0.67 [0.44–1.02]	0.06	0.54 [0.33–0.89]	0.015
Viral Failure	0.54 [0.32–0.92]	0.02	0.67 [0.36–1.25]	0.21

*Age was treated as a categorical variable including age <1 year, 1–3 years, 3–10 years, where children age 3–10 years were used as the reference group.