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Volume 2: No. 2, April 2005
ORIGINAL RESEARCH
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| � | 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.
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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.
| This page last reviewed October 25, 2011
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