Results 31 to 40 of about 51,780 (284)

Trends and differentials in menarcheal age in China. [PDF]

open access: yes, 2002
This study examines trends in menarcheal age of women born in China between 1950 and 1973, and explores the impact of relevant social background characteristics on the timing of first menarche.
Murphy, Michael J.   +2 more
core   +1 more source

Relationship between Age at Menarche and Menstrual Irregularities in Reproductive Age

open access: yesJournal of Mazandaran University of Medical Sciences, 2021
Background and purpose: Factors associated with menstrual irregularities are highly important. This study aimed to determine the association between age at menarche and menstrual irregularities in reproductive period.
Maryam Farahmand   +3 more
doaj  

Age at menarche in Ceylon

open access: yesAnnals of Human Biology, 1974
SummaryThe age at menarche in girls in schools in Colombo city, Ceylon, in 1968, was estimated by probit analysis as 13·72 ± 0·12 years. This figure is higher than that of 12·84 years obtained in 1950 by a similar analysis. The exact date at menarche was forgotten by 15·5% of the sample but all alleged they remembered the year of age at which it was ...
L, David, C H, Jayewardene
openaire   +2 more sources

Age at menarche in Tahiti

open access: yesAnnals of Human Biology, 1987
Data on age at menarche have been collected, using the status quo method, among 1246 Tahitian girls attending school. The median age, estimated by probits, is 12.75 SD 1.76. The girls of the rural districts have a higher median age (13.08 SD 1.97) than the girls of Papeete (12.61 SD 1.47). The results were compared with data collected among other girls
J, Ducros, A, Ducros
openaire   +2 more sources

Secular trends in age at menarche among Chinese girls from 24 ethnic minorities, 1985 to 2010 [PDF]

open access: yesGlobal Health Action, 2015
Background: Declining age at menarche has been observed in many countries. In China, a decrease of 4.5 months per decade in the average age at menarche among the majority Han girls has recently been reported.
Yi Song   +5 more
doaj   +1 more source

Parent-of-origin-specific allelic associations among 106 genomic loci for age at menarche. [PDF]

open access: yes, 2014
Age at menarche is a marker of timing of puberty in females. It varies widely between individuals, is a heritable trait and is associated with risks for obesity, type 2 diabetes, cardiovascular disease, breast cancer and all-cause mortality.
Paternoster, Lavinia   +999 more
core   +1 more source

Is age at menarche associated with total mortality? The Tromsø Study [PDF]

open access: yes, 2018
Marie Wasmuth Lundblad, Bjarne K Jacobsen Department of Community Medicine, UiT The Arctic University of Norway, Tromsø, Norway Purpose: Early age at menarche (AAM) has been associated with increased mortality and morbidity, including premature ...
Marie Lundblad   +5 more
core   +1 more source

Retrospective longitudinal analysis of the effects of postnatal weight gain on the timing and tempo of puberty and menarche in a cohort of Italian girls

open access: yesItalian Journal of Pediatrics, 2022
Objective over the last few decades there has been a progressive decline in the average age of onset of pubertal development stages in both sexes. The increase in the prevalence of childhood obesity seems to play an important role in this phenomenon ...
Vittorio Ferrari   +5 more
doaj   +1 more source

Menarcheal age in Cumbria

open access: yesAnnals of Human Biology, 1986
A survey of age at menarche in north-west England, how it is affected by family environment and how it affects physique, was carried out on a large sample of schoolgirls in Cumbria. Age at menarche shows no independent effect of social class, but is strongly influenced by family size and also partly by position in family.
Roberts, D. F., Wood, W., Chinn, S.
openaire   +4 more sources

Relation of Age at Menarche to Physical Activity [PDF]

open access: yesSport Mont, 2016
The aim of this study is to determine whether regular physical activity during early puberty is influential in preventing early menarche. This cross sectional study was carried out on 102 post-menarcheal girls aged 11–20 (14.79±0.33).
Egreta Peja, Ela Tase
doaj  

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