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. 2018 Dec 28;4(12):e01105.
doi: 10.1016/j.heliyon.2018.e01105. eCollection 2018 Dec.

Parametric survival analysis of menarche onset timing among Nigerian girls

A F Fagbamigbe  1   2 , M O Obiyan  3 , O I Fawole  1
Affiliations

Parametric survival analysis of menarche onset timing among Nigerian girls

A F Fagbamigbe et al. Heliyon. .

Abstract

Background: This study was a response to the dearth of information on the timing of menarche in low-income countries, and the need to update knowledge on the condition. It thereby enables the provision of adequate support to young girls during menarche. The study determined the timing and range of onset of menarche and identified the factors influencing the timing.

Methods: We used data on girls' sexual and reproductive processes from a nationally representative population survey of girls aged 15-24 years in Nigeria. Descriptive statistics, and survival analysis techniques were used for data analysis at p = 0·05.

Finding: A quarter of the respondents (26%) had commenced menstruation by age 12. Almost all, (90%) had experienced menstruation by age 17. Girls aged 20-24 years reported later menarche (time ratio 1·066, 95% CI: 1·045-1·087) compared to those aged 15-19 years. An increase of respondents age by one year resulted in 0·8% delay in onset timing. Significant differences were also found in the zone of residence among the sampled population. Compared with girls from the South East, the timing of menstruation was generally delayed among the girls from South-South by 5%, North Central by 9%, South West by 10%, North East by 16% and 17% among girls from the North West.

Interpretation: There was a wide range in menarcheal age in Nigerian girls with a peak at 13-14 years and the possibility of a secular trend in the timing of onset. Early family life education is recommended.

Keywords: Pediatrics; Public health; Reproductive medicine.

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Figures

Fig. 1
Fig. 1
Distribution of respondents by their age at commencement of menstruation among those that had started and among all respondents.
Fig. 2
Fig. 2
Survivorship curves showing probabilities of starting menstruation at different ages (The red lines show age at which 50% of the girls had Menarche).
Fig. 3
Fig. 3
Survivorship curves showing probabilities of starting menstruation at different ages by selected characteristics.
See this image and copyright information in PMC

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References

    1. Ramathuba D.U. Menstrual knowledge and practices of female adolescents in Vhembe district, Limpopo Province, South Africa. Curationis. 2015;38(1):1–6. - PMC - PubMed
    1. De Sanctis V., Bernasconi S., Bianchin L. Onset of menstrual cycle and menses features among secondary school girls in Italy: a questionnaire study on 3,783 students. Indian J. Endocrinol. Metab. 2014;18(Suppl 1):S84–S92. - PMC - PubMed
    1. Mounir G.M., El-sayed N.A., Mahdy N.H., Khamis S.E. Nutritional factors affecting the menarcheal state of adolescent school girls in Alexandria. J. Egypt. Publ. Health Assoc. 2007;82(3-4):1–22. - PubMed
    1. Cherry A.L. Biological determinants and influences affecting adolescent pregnancy. In: ALC, MED, editors. International Handbook of Adolescent Pregnancy. Springer Science+Business Media; New Delhi: 2014. pp. 39–55.
    1. Sarpolis K. 2011. First Menstruation: Average Age and Physical Signs. Young Women, Sexual Health.http://www.obgyn.net/sexual-health/first-menstruation-average-age-and-ph...

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