Age at menarche in portuguese adolescents : a cross-sectional study with HBSC portuguese survey

Abstract

Copyright © 2016 Global Advanced Research JournalsEarly and delayed menarche and early and delayed puberty raise a number of issues for the health and well-being of girls and women. To examine multiple factors associated with early and delayed menarche in a large national representative sample of Portuguese school girls, using the national Portuguese data from the HSBC study. Study provides national representative data of 5050 Portuguese adolescents. This study used a subset of girls, whose mean age was 14.0 years old. Overall, results showed the majority of the girls reported having had menarche between 12 and 13 years old. Having had sexual intercourse, getting involved in fights, sleeping more than eight hours a day, self-reporting overweight or obesity and being on a weight loss diet were significantly and independently associated with early menarche. As for delayed menarche, it was associated with smoking, having had more than two episodes of drunkenness and having had school results below the average. Results are in line with a growing literature that suggests that girls who experience early or delayed menarche are more likely to engage in risk behaviours such as early sexual initiation or alcohol abuse. These results highlight the need to raise awareness and consequently prevention.The HBSC study in Portugal was funded by public funds: Ministry of Health and Ministry of Education and Science. The authors thank the adolscents for their participation in the study, and the teachers for their assistance in helping collecting data. The first autor has a grant supported by the Foundation for Science and Technology (SFRH/BPD/110905/2015).info:eu-repo/semantics/publishedVersio

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This paper was published in Universidade de Lisboa: Repositório.UL.

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