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Epidemiology
September 2007

Age-Related Macular Degeneration and Cancer Mortality in the Atherosclerosis Risk in Communities Study

Author Affiliations

Author Affiliations: Centre for Eye Research Australia, University of Melbourne (Drs Cheung and Wong), and Royal Melbourne Hospital (Dr Cheung), Victoria; Department of Community, Occupational, and Family Medicine, Yong Loo Lin School of Medicine (Dr Shankar), and Singapore Eye Research Institute (Dr Wong), National University of Singapore; Department of Ophthalmology, University of Wisconsin, Madison (Dr Klein); Division of Epidemiology and Community Health, University of Minnesota, Minneapolis (Dr Folsom); and Department of Biostatistics, University of North Carolina, Chapel Hill (Dr Couper). Group Information: A list of the ARIC Study investigators was published in Am J Epidemiol. 1989;129:687-701.

 

LESLIEHYMANPhD

Arch Ophthalmol. 2007;125(9):1241-1247. doi:10.1001/archopht.125.9.1241
Abstract

Objective  To examine the prospective association of early age-related macular degeneration (AMD) with cancer mortality.

Methods  A population-based cohort study of 10 029 persons aged 49 to 73 years free of cancer. The AMD signs were evaluated from retinal photographs taken in 1993 through 1995. Cancer mortality was determined from death records.

Results  There were 464 cases of early AMD. Over 10 years, there were 234 cancer deaths (71 lung cancer deaths). After controlling for age, sex, race, field center, education, smoking status, pack-years of smoking, body mass index (calculated as weight in kilograms divided by height in meters squared), and diabetes mellitus, early AMD was associated with cancer mortality (rate ratio [RR], 1.68; 95% confidence interval [CI], 1.03-2.73). This association was overall stronger in African American individuals (RR, 3.93; 95% CI, 1.67-9.22) than white individuals (RR, 1.28; 95% CI, 0.71-2.32) and for lung cancer deaths (RR, 2.14; 95% CI, 0.97-4.72) than nonlung cancer deaths (RR, 1.50; 95% CI, 0.81-2.78). In African American individuals, early AMD was associated with a 5-fold higher risk of lung cancer deaths (RR, 5.28; 95% CI, 1.52-18.40).

Conclusions  Middle-aged African American individuals with early AMD may be at increased risk of dying of cancer, particularly lung cancer. This association was not present in white individuals and needs confirmation in other studies.

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