ArticleBMC public health2009
Decline in age at menarche among Spanish women born from 1925 to 1962.
Article in BMC public health, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
13 citing papers in PubMed, 1 synthesis or guideline pooled it, 57 citations in OpenAlex.
- A Systematic Literature Review of Factors Affecting the Timing of Menarche: The Potential for Climate Change to Impact Women's Health.International journal of environmental research and public health · 2020Pooled it
- Trial
- Spatio-temporal trends of the age-at-menarche percentiles among Portuguese women since 1920.BMC women's health · 2023Article
- The health effects of soy: A reference guide for health professionals.Frontiers in nutrition · 2022Review
- Space-time analysis of ovarian cancer mortality rates by age groups in spanish provinces (1989-2015).BMC public health · 2020Article
- Life History Transitions at the Origins of Agriculture: A Model for Understanding How Niche Construction Impacts Human Growth, Demography and Health.Frontiers in endocrinology · 2020Review
- Secular Trends and Socioeconomic Differentials in Menarcheal Age for South Korean Women.Iranian journal of public health · 2018Article
- Secular trends in age at menarche among Chinese girls from 24 ethnic minorities, 1985 to 2010.Global health action · 2015Article
- Menarche age in Iran: A meta-analysis.Iranian journal of nursing and midwifery research · 2014Review
- Age at menarche and its relationship to body mass index among adolescent girls in Kuwait.BMC public health · 2013Article
- Article
- Association analyses suggest the effects of RANK and RANKL on age at menarche in Chinese women.Climacteric : the journal of the International Menopause Society · 2012Article
- Genetic Regulation of Puberty Timing in Humans.NeuroendocrinologyArticle
Corrections and comments
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Authors and funding
8 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundWhile the timing of reproductive events varies across populations, a downward trend in age at menarche has nevertheless been reported in most of the developed world over the past century. Given the impact of change in age at menarche on health conditions, this study sought to examine secular trends in age at menarche among women living in Navarre (Northern Spain) who participated in a population-based breast cancer screening programme.
methodsThe study was based on 110545 women born from 1925 to 1962. Trends were tested using a linear regression model, in which year of birth was entered continuously as the predictor and age at menarche (years) as the response variable, using size of town and region of birth as covariates.
resultsAmong women born in Navarre between 1925 and 1962, age at menarche declined steadily from an average of 13.72 years in the 1925-1929 birth-cohorts to 12.83 years in the 1958-1962 birth-cohorts. Controlling for size of town or city of birth, age at menarche declined by an average of 0.132 years every 5 years over the period 1925-1962. This decline was greater in women born in rural versus urban settings. Trends were also different among regions of birth.
conclusionWe report a population-based study showing a downward trend in age of onset of menarche among Spanish women born in the period 1925-1962, something that is more pronounced among women born in rural settings and varies geographically.
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