Table 3.

Population attributable fraction and excess HIV deaths associated with living in states with higher HIV case-fatality rates, 37 US states, 2001–2007.

Quartile of state HIV case-fatality rate	Rate ratio* (95% CI)	HIV deaths	Proportion of deaths	Population attributable fraction (95% CI)	Excess HIV deaths (95% CI)
Quartile 1	1.76 (1.70–1.82)	14,922	0.25	0.107 (0.101–0.114)	1,602 (1,508–1,670)
Quartile 2	1.49 (1.44–1.53)	27,257	0.45	0.146 (0.135–0.157)	3,987 (3,761–4,312)
Quartile 3	1.22 (1.17–1.27)	5,140	0.09	0.016 (0.012–0.019)	80 (62–94)
Quartile 4	Reference	12,904	0.21	Reference	Reference
Overall	-	60,223	1.00	0.269 (0.253–0.286)	5,669 (5,331–6,076)

Abbreviation: CI = confidence interval, HIV = human immunodeficiency virus.

^*Adjusted for age, calendar year, race/ethnicity, and sex.