Results 21 to 30 of about 81,358 (273)

Age at menarche in Ceylon

Annals 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
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Age at menarche in Tahiti

Annals 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
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Childhood Abuse and Age at Menarche [PDF]

Journal of Adolescent Health, 2013
Purpose—Physical and sexual abuse are prevalent social hazards. We sought to examine the association between childhood physical and sexual abuse and age at menarche. Methods—Among 68,505 participants enrolled in the Nurses’ Health Study II we investigated the association between childhood physical abuse and sexual abuse on menarche prior to age 11 ...
Renée, Boynton-Jarrett, Rosalind J, Wright, Frank W, Putnam, Eileen, Lividoti Hibert, Karin B, Michels, Michele R, Forman, Janet, Rich-Edwards   +6 more
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Association of timing of menarche with depressive symptoms and depression in adolescence:Mendelian randomisation study [PDF]

, 2017
Background Observational studies report associations between early menarche and higher levels of depressive symptoms and depression. However, no studies have investigated whether this association is causal. Aims To determine whether earlier menarche is a
Bonilla, Carolina, Davey Smith, George, Joinson, Carol, Lewis, Sarah J, Sequeira, Maija-Eliina   +4 more
core   +2 more sources

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

Global 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, Jun Ma, Anette Agardh, Patrick W.C. Lau, Peijin Hu, Bing Zhang   +5 more
doaj   +1 more source

Pubertal timing and breast density in young women: a prospective cohort study. [PDF]

, 2019
BACKGROUND:Earlier age at onset of pubertal events and longer intervals between them (tempo) have been associated with increased breast cancer risk. It is unknown whether the timing and tempo of puberty are associated with adult breast density, which ...
Dorgan, Joanne F, Hoover, Robert N, Houghton, Lauren C, Hylton, Nola M, Jung, Seungyoun, Klifa, Catherine, LeBlanc, Erin S, Paris, Kenneth, Shepherd, John A, Snetselaar, Linda G, Troisi, Rebecca, Van Horn, Linda   +11 more
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Age at menarche in Iran

Annals of Human Biology, 2002
Age at menarche and its potential associated factors are reported for 1862 Shiraz (Southern Iran) secondary school girls taking part in a cross-sectional survey selected from the four educational districts of the city.Probit analysis was used to estimate age at menarche, principal component analysis (PCA) was applied to analyse socio-economic status ...
S M T, Ayatollahi, E, Dowlatabadi, S A R, Ayatollahi   +2 more
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Characterization of Spontaneous and Induced Puberty in Girls with Turner Syndrome [PDF]

, 2017
OBJECTIVE: To characterize puberty in girls with Turner syndrome (TS) and determine whether specific patient characteristics are associated with the timing of menarche.
Eugster, Erica A., Folsom, Lisal J., Nabhan, Zeina M., Slaven, James E.   +3 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

Italian 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, Simona Stefanucci, Marta Ferrari, Daniele Ciofi, Stefano Stagi, on the behalf of the Tuscany Menarche Study Group   +5 more
doaj   +1 more source

Decline in age at menarche among Spanish women born from 1925 to 1962 [PDF]

, 2009
BACKGROUND: While 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.
Anna Cabanes, Nieves Ascunce, Enrique Vidal, María Ederra, Ana Barcos, Nieves Erdozain, Virginia Lope, Marina Pollán, AS Parent, NC Onland-Moret, M Okasha, F Clavel-Chapelon, G Chodick, KF Huen, G Wyshak, WC Chumlea, HB Nichols, MD Marrodan, AG Apraiz, E Rebato, B Marin, N Mendoza, CA Anderson, G Schoeters, Instituto Nacional de Estadistica (INE), Demografia y Poblacion, MJ Broeders, C Prado, MD Marrodan, E Rebato, VA Casey, A Must, R Cooper, R Zarow, RC Hauspie, A Morabia, AS Parent, ME Herman-Giddens, EW Demerath, LS Adair, SE Anderson, TJ Cole, DF Roberts, M Solsona, M Maclure, SE Anderson, PB Kaplowitz, GH Bratberg, CB Jasik, MI Hernandez, A Emaus, RE Frisch, FM Biro, RH Lustig, ZK Gajdos, JG Brody, M Pollan, T Wu, SS Sun, L Aksglaede   +58 more
core   +1 more source