Spatio-temporal trends of the age-at-menarche percentiles among Portuguese women since 1920.

BMC Womens Health · 2023 · PMC10486027 · PMID 37679702

Europe PMC DOI

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a decreasing trendno p-value reported

Results A decreasing trend in the age at menarche (about 1.5 years in 5 decades) and regional differences for all the considered percentiles were found.

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