Comparison of ischemic stroke incidence in HIV-infected and non-HIV-infected patients in a US health care system - PubMed (original) (raw)

Comparison of ischemic stroke incidence in HIV-infected and non-HIV-infected patients in a US health care system

Felicia C Chow et al. J Acquir Immune Defic Syndr. 2012.

Abstract

Background: Cardiovascular disease is increased among HIV-infected patients, but little is known regarding ischemic stroke rates. We sought to compare stroke rates and determine stroke risk factors in HIV-infected versus non-HIV-infected patients.

Methods: An HIV cohort and matched non-HIV comparator cohort seen between 1996 and 2009 were identified from a Boston health care system. The primary endpoint was ischemic stroke, defined using International Classification of Diseases (ICD) codes. Unadjusted stroke incidence rates were calculated. Cox proportional hazards modeling was used to determine adjusted hazard ratios (HRs).

Results: The incidence rate of ischemic stroke was 5.27 per 1000 person-years in HIV-infected compared with 3.75 in non-HIV-infected patients, with an unadjusted HR of 1.40 [95% confidence interval (CI): 1.17 to 1.69, P < 0.001]. HIV remained an independent predictor of stroke after controlling for demographics and stroke risk factors (HR: 1.21, 95% CI: 1.01 to 1.46, P = 0.043). The relative increase in stroke rates (HIV vs. non-HIV) was significantly higher in younger HIV patients (incidence rate ratio: 4.42, 95% CI: 1.56 to 11.09, age 18-29; 2.96, 1.69-4.96, age: 30-39; 1.53, 1.06-2.17, age: 40-49), and in women [HR: 2.16 (95% CI: 1.53 to 3.04) for women vs. HR: 1.18 (95% CI: 0.95 to 1.47) for men]. Among HIV patients, increased HIV RNA (HR: 1.10, 95% CI: 1.04 to 1.17, P = 0.001) was associated with an increased risk of stroke.

Conclusions: Stroke rates were increased among HIV-infected patients, independent of common stroke risk factors, particularly among young patients and women.

PubMed Disclaimer

Figures

Figure 1

Figure 1

Stroke Rates in HIV-Infected versus Non HIV-Infected Patients Ischemic stroke incidence rates per 1000 PY are shown. The bars indicate incidence rates in the overall HIV (black) and non-HIV (white) cohorts. The lines indicate incidence rates by age group, comparing the HIV (black, solid line) and non-HIV (white, dotted line) cohorts. Asterisks indicate statistically significant differences. The hazard ratio for stroke given HIV infection was 1.40 (95% CI 1.17-1.69, P < 0.001).

Similar articles

Cited by

References

    1. Currier JS, Taylor A, Boyd F, et al. Coronary heart disease in HIV-infected individuals. J Acquir Immune Defic Syndr. 2003;33:506–512. - PubMed
    1. Klein D, Hurley LB, Quesenberry CP, Jr., Sidney S. Do protease inhibitors increase the risk for coronary heart disease in patients with HIV-1 infection? Journal of acquired immune deficiency syndromes. 2002;30:471–477. - PubMed
    1. Lang S, Mary-Krause M, Cotte L, et al. Increased risk of myocardial infarction in HIV-infected patients in France, relative to the general population. AIDS. 2010;24:1228–1230. - PubMed
    1. Triant VA, Lee H, Hadigan C, Grinspoon SK. Increased acute myocardial infarction rates and cardiovascular risk factors among patients with human immunodeficiency virus disease. J Clin Endocrinol Metab. 2007;92:2506–2512. - PMC - PubMed
    1. Berger JR, Harris JO, Gregorios J, Norenberg M. Cerebrovascular disease in AIDS: a case-control study. AIDS. 1990;4:239–244. - PubMed

Publication types

MeSH terms

Grants and funding

LinkOut - more resources