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AJPH First Look, published online ahead of print Aug 13, 2008
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98/10/1822    most recent
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October 2008, Vol 98, No. 10 | American Journal of Public Health 1822-1824
© 2008 American Public Health Association
DOI: 10.2105/AJPH.2007.120444

RESEARCH AND PRACTICE

Age at Menarche and First Pregnancy Among Psychosocially At-Risk Adolescents

Jessica Dunbar, MSPH, Jeanelle Sheeder, MSPH, Dennis Lezotte, PhD, Dana Dabelea, MD, PhD and Catherine Stevens-Simon, MD

Jessica Dunbar, Jeanelle Sheeder, Dennis Lezotte, and Dana Dabelea are with the Department of Preventive Medicine and Biometrics, University of Colorado, Denver, Health Sciences Center, Denver. Jeanelle Sheeder and Catherine Stevens-Simon are with the Department of Pediatrics, University of Colorado, Denver, Health Sciences Center, Denver.

Correspondence: Requests for reprints should be sent to Jeanelle Sheeder, MSPH, University of Colorado Denver—Health Sciences Center, 13 123 E. 16th Ave, Box B025, Aurora, CO 80045 (e-mail: jeanelle.sheeder{at}uchsc.edu).

We sought to determine which factors influence the association between menarche and conception among adolescent study participants (n = 1030), who demonstrated an earlier age of menarche than did national samples. Age at first sexual intercourse (coitarche) mediated the relationship between age at menarche and first pregnancy among White girls, whereas gynecologic age at coitarche (age at coitarche minus age at menarche) and age at menarche explained the timing of the first pregnancy among Black and Hispanic girls. Pregnancy prevention interventions to delay coitarche should also include reproductive education and contraception.






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