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American Journal of Epidemiology Vol. 126, No. 5: 929-935
Copyright © 1987 by The Johns Hopkins University School of Hygiene and Public Health

research-article

GENETIC VARIANCE OF WEIGHT AND LENGTH IN INFANT TWINS

ROBERT S. LEVINE1, CHARLES H. HENNEKENS2 and MARY JANE JESSE3

1Department of Epidemiology and Public Health, University of Miami School of Medicine Miami, FL
2The Channing Laboratory, Departments of Medicine and Preventive Medicine and Clinical Epidemiology, Harvard Medical School and Brigham and Women's Hospital Boston, MA
3American Heart Association Dallas, TX

A population-based cohort of 166 twin pairs (67 monozygotic and 99 dizygotic) born at the Jackson Memorial Hospital/University of Miami Medical Center, from July 1, 1976 to December 31, 1980 was identified. Body weight and length were measured at 14 days and at one, three, six, nine, and 12 months of age. Statistically significant genetic variance was found for both body weight and length at each data point. Heritability for body weight increased from 0.28 at 14 days to 0.64 at one year. Corresponding values for body length were 0.16 and 0.48.

body height; body weight; infants; twins


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R S Levine, C H Hennekens, and M J Jesse
Blood pressure in prospective population based cohort of newborn and infant twins
BMJ, January 29, 1994; 308(6924): 298 - 302.
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