Skip Navigation Links
Centers for Disease Control and Prevention
 CDC Home Search Health Topics A-Z

Preventing Chronic Disease: Public Health Research, Practice and Policy

View Current Issue
Issue Archive
Archivo de números en español








Emerging Infectious Diseases Journal
MMWR


 Home 

Volume 2: No. 2, April 2005

ORIGINAL RESEARCH
Secular Trends in Age at Menarche, Smoking, and Oral Contraceptive Use Among Israeli Girls

  Birth year
<1970 1970–1972 1973–1975 1976–1978 >1978
Mean age at menarche in years (SD) 13.41 (1.30) 13.31 (1.29) 13.19 (1.30) 13.10 (1.27) 13.03 (1.28)
% having ever smoked 23.55 19.47 22.74 27.14 32.86
% having ever used oral contraceptives 25.49 23.05 29.31 30.43 31.24

Figure.
Trend for age at menarche (P <.001) and proportion of recruits having ever smoked (P <.001) or used oral contraceptives (P <.001) among female Israeli army recruits (1986–2000), by birth year.

Return to article

 



 



The opinions expressed by authors contributing to this journal do not necessarily reflect the opinions of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors’ affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.


 Home 

Privacy Policy | Accessibility

CDC Home | Search | Health Topics A-Z

This page last reviewed October 25, 2011

Centers for Disease Control and Prevention
National Center for Chronic Disease Prevention and Health Promotion
 HHS logoUnited States Department of
Health and Human Services