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Robert P. Hirsch, PhD; Bernard Schwartz, MD, PhD

Arch Ophthalmol. 1984;102(7):1015-1018.

Abstract
• Prevalences of 15 circulatory diagnoses were investigated for 113,242 patients undergoing intracapsular cataract extraction and 67,052 reference patients discharged from a sample of North American hospitals during 1979. After controlling for distributional differences in age (nine categories between 45 and 89 years), sex, and race (white v nonwhite), seven of the 15 diagnoses occurred with sufficient frequency to allow age-, sex-, and race-adjusted analysis. All seven of those diagnoses were found to have statistically significant differences in prevalences between the two procedure groups. Only benign hypertension was found to be more prevalent among patients undergoing cataract extraction regardless of age, sex, or race. The remaining six diagnoses all had a pattern of elevated prevalence among younger patients undergoing cataract extraction changing to elevated prevalence among other surgical patients at older ages.

Author Affiliations
From the Department of Ophthalmology, New England Medical Center, Tufts University School of Medicine, Boston. Dr Hirsch is now with the National Eye Institute, National Institutes of Health, Bethesda, Md.

Footnotes
Accepted for publication Dec 19, 1983.

Read in part before the Association for Research in Vision and Ophthalmology, Sarasota, Fla, May 2, 1983.

Reprint requests to Department of Ophthalmology, New England Medical Center, 171 Harrison Ave, Boston, MA 02111 (Dr Schwartz).

This study was supported by training grant EY 07045 from the National Eye Institute, Bethesda, Md, and by a grant from Research to Prevent Blindness, Inc, New York.

Basic data for use in this study were supplied by the Commission of Professional and Hospital Activities (CPHA), Ann Arbor, Mich. In their data the identities of individual hospitals were not revealed in any way. Any analysis, interpretation, or conclusion based on these data is solely that of the authors, and the CPHA specifically disclaims responsibility for any such analysis, interpretation, or conclusion.

George B. Hutchinson, MD, reviewed the manuscript and provided helpful suggestions. Victoria Gibson, MA, edited the manuscript.

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