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Secular trends of age at menarche and age at menopause in women born since 1951 from a county of Shandong Province, China

Beijing da xue xue bao. Journal of Peking University. Yi xue ban, 2023-06, Vol.55 (3), p.502-510 [Peer Reviewed Journal]

ISSN: 1671-167X ;DOI: 10.19723/j.issn.1671-167X.2023.03.017 ;PMID: 37291927

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  • Title:
    Secular trends of age at menarche and age at menopause in women born since 1951 from a county of Shandong Province, China
  • Author: Wang, X W ; Mu, Y C ; Guo, Z Y ; Zhou, Y B ; Zhang, Y ; Li, H T ; Liu, J M
  • Subjects: Age Factors ; Aged ; China - epidemiology ; Female ; Fertility ; Humans ; Menarche ; Menopause ; Regression Analysis
  • Is Part Of: Beijing da xue xue bao. Journal of Peking University. Yi xue ban, 2023-06, Vol.55 (3), p.502-510
  • Description: To describe the secular trends of age at menarche and age at natural menopause of women from a county of Shandong Province. Based on the data of the Premarital Medical Examination and the Cervical Cancer and Breast Cancer Screening of the county, the secular trends of age at menarche in women born in 1951 to 1998 and age at menopause in women born in 1951 to 1975 were studied. Joinpoint regression was used to identify potential inflection points regarding the trend of age at menarche. Average hazard ratios ( ) of early menopause among women born in different generations were estimated by performing multivariate weighted Cox regression. The average age at menarche was (16.43±1.89) years for women born in 1951 and (13.99±1.22) years for women born in 1998. The average age at menarche was lower for urban women than that for rural women, and the higher the education level, the lower the average age at menarche. Joinpoint regression analysis identified three inflection points: 1959, 1973 and 1993. The average age
  • Publisher: China
  • Language: Chinese
  • Identifier: ISSN: 1671-167X
    DOI: 10.19723/j.issn.1671-167X.2023.03.017
    PMID: 37291927
  • Source: MEDLINE
    PubMed Central
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