| Popis: |
BACKGROUND: Menarche signifies the onset of menstruation and is one of the milestones in women's lives. AIM: The aim of the present study was to elucidate the influence of birth order, family size, parents' level of education, and body size parameters on age at menarche among samples of Nigerian secondary schoolgirls. MATERIALS AND METHODS: A cross-sectional study of age at menarche of Nigerian secondary schoolgirls (n = 600) aged 11–18 years was done. The effect of birth order, family size, and parents' educational attainment on age at menarche was analyzed. Data pertaining to menarche and family background were collected using a self-administered structured questionnaire and analyzed using SPSS version 22. RESULTS: Mean age at menarche was 13.54 ± 0.90 years. Father's level of education showed statistical significant effect on the mean age at menarche (P 0.05). The result showed that firstborn girls have earlier age at menarche (12.82 ± 0.68 years) than later-born girls (14.09 ± 0.58 years, P CONCLUSION: The results suggest that birth order, family size, and parents' level of education have influence on age at menarche. |
