Table 2.

Effect of most recent BMI category on all-cause mortality among a cohort of HIV-positive adults in Soweto, South Africa.

	Univariate HR (95% CI)	P	aHR (95% CI)	P
Most recent BMI category
Underweight	3.0 (2.2–4.0)	<0.001	1.8 (1.3–2.4)	<0.001
Normal	REF		REF
Overweight	0.47 (0.32–0.70)	<0.001	0.59 (0.40–0.87)	0.008
Obese	0.36 (0.22–0.59)	<0.001	0.48 (0.29–0.80)	0.005
HAART use	0.33 (0.22–0.51)	<0.001	0.29 (0.19–0.45)	<0.001
Most recent CD4 cell count (cells/μl)
<200	REF		REF
200–349	0.24 (0.18–0.35)	<0.001	0.24 (0.17–0.35)	<0.001
350–500	0.11 (0.06–0.20)	<0.001	0.10 (0.06–0.20)	<0.001
>500	0.09 (0.06–0.16)	<0.001	0.12 (0.07–0.21)	<0.001
CPT use	1.2 (1.0–1.6)	0.039	0.84 (0.65–1.1)	0.180
Household income (Rand/month)
<1000	REF		REF
1001–5000	0.82 (0.64–1.0)	0.110	0.91 (0.72–1.2)	0.475
>5000	0.94 (0.46–1.9)	0.858	1.0 (0.51–2.1)	0.915
Employed	1.1 (0.85–1.4)	0.569	0.80 (0.61–1.0)	0.065
Smoking, ever	1.8 (1.4–2.2)	<0.001	1.4 (1.0–1.8)	0.024

aHR also adjusted for age, sex, and years since HIV diagnosis. aHR, adjusted hazard ratio; CI, confidence interval; CPT, cotrimoxazole preventive therapy; HR, hazard ratio; REF, reference.