White blood cell count and incidence of coronary heart disease and ischemic stroke and mortality from cardiovascular disease in African-American and White men and women: Atherosclerosis Risk in Communities Study

Chong Do Lee, Aaron R. Folsom, F. Javier Nieto, Lloyd E. Chambless, Eyal Shahar, Douglas A. Wolfe

Research output: Contribution to journalArticle

239 Scopus citations

Abstract

The authors examined the association between white blood cell (WBC) count and incidence of coronary heart disease and ischemic stroke and mortality from cardiovascular disease in 13,555 African-American and White men and women from the Atherosclerosis Risk in Communities (ARIC) Study. Blood was drawn at the ARIC baseline examination, beginning in 1987-1989. During an average of 8 years of follow-up (through December 1996), there were 488 incident coronary heart disease events, 220 incident strokes, and 258 deaths from cardiovascular disease. After adjustment for age, sex, ARIC field center, and multiple risk factors, there was a direct association between WBC count and incidence of coronary heart disease (p<0.001 for trend) and stroke (p for trend <0.001) and mortality from cardiovascular disease (p for trend <0.001) in African Americans. The African Americans in the highest quartile of WBC count (≥7,000 cells/mm3) had 1.9 times the risk of incident coronary heart disease (95% confidence interval (CI): 1.19, 3.09), 1.9 times the risk of incident ischemic stroke (95% CI: 1.03, 3.34), and 2.3 times the risk of cardiovascular disease mortality (95% CI: 1.38, 3.72) as their counterparts in the lowest quartile of WBC count (<4,800 cells/mm3). These associations were similar in Whites and in never smokers. An elevated WBC count is directly associated with increased incidence of coronary heart disease and ischemic stroke and mortality from cardiovascular disease in African-American and White men and women.

Original languageEnglish (US)
Pages (from-to)758-764
Number of pages7
JournalAmerican journal of epidemiology
Volume154
Issue number8
DOIs
StatePublished - Oct 15 2001

Keywords

  • Cardiovascular diseases
  • Cerebrovascular accident
  • Coronary disease
  • Leukocyte count
  • Leukocytes
  • Prospective studies

ASJC Scopus subject areas

  • Epidemiology

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