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Objective
To determine if an association exists between birth weight and non-fatal cardiovascular disease in women who were nurses.
Design
Cohort study of women in the Nurses' Health Study followed up every 2 years from 1976 to 1992.
Setting
USA.
Participants
70 297 women (mean age 42 y in 1976) born between 1921 and 1946, all registered nurses, who were free from coronary heart disease and stroke in 1976.
Assessment of risk factors
Women were grouped by their birth weight category: <2268 g (n=1392), 2268–2495 g (n=3549), >2495–3175 g (n=21 171), >3175–3856 g (n=31 216), >3856–4536 g (n=7723), or >4536 g (n=1638). 3608 women who were born prematurely were not included in the analysis. Postal questionnaires were used to gather data on past and current cardiovascular disease risk factors in 1976 and birth weight in 1992.
Main outcome measures
Data on non-fatal myocardial infarction …
Footnotes
Sources of funding: National Institutes of Health.
For article reprint: Dr J W Rich-Edwards, Department of Ambulatory Care and Prevention, Harvard Pilgrim Health Care and Harvard Medical School, 126 Brookline Avenue, Suite 200, Boston, MA 02215, USA. Fax +1 617 421 2763.