Age at menarche and chronological age as explanatory factors of BMI: a cross-sectional study among Peruvian adolescents
BACKGROUND: Age at menarche has been associated with various indicators of adolescent health, including body mass index (BMI). However, its specific contribution to BMI across different geographical contexts remains largely unexplored. OBJECTIVE: To analyze whether chronological age and age at menar...
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2025
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| author | Gálvez-Díaz, Norma Del Carmen Javier Aliaga, David Joel Casas-Gálvez, Christian Barreto-Espinoza, Luz Antonia Saintila, Jacksaint Calizaya Milla, Yaquelin Eveling |
| author_browse | Barreto-Espinoza, Luz Antonia Calizaya Milla, Yaquelin Eveling Casas-Gálvez, Christian Gálvez-Díaz, Norma Del Carmen Javier Aliaga, David Joel Saintila, Jacksaint |
| author_facet | Gálvez-Díaz, Norma Del Carmen Javier Aliaga, David Joel Casas-Gálvez, Christian Barreto-Espinoza, Luz Antonia Saintila, Jacksaint Calizaya Milla, Yaquelin Eveling |
| author_sort | Gálvez-Díaz, Norma Del Carmen |
| collection | Producción científica |
| description | BACKGROUND: Age at menarche has been associated with various indicators of adolescent health, including body mass index (BMI). However, its specific contribution to BMI across different geographical contexts remains largely unexplored. OBJECTIVE: To analyze whether chronological age and age at menarche act as explanatory factors of BMI in a sample of Peruvian adolescents. METHODS: This was an explanatory study. A non-probabilistic sample of 423 adolescents from Lambayeque, Peru, was included. A structured data collection sheet was used to assess age at menarche, as well as weight and height. RESULTS: The multiple regression model identified age at menarche and chronological age as significant predictors of BMI. Model 2 demonstrated a better fit (BIC = 1658 vs. BIC = 1669 in Model 1) and explained 31% of the variability in BMI (adjusted R² = 0.310, F = 96.018, p < 0.001). A negative effect of age at menarche on BMI was observed (β = -0.161, p < 0.001), indicating that earlier menarche is associated with higher BMI. Similarly, chronological age had a significant positive effect (β = 0.516, p < 0.001) and was the variable with the greatest impact on BMI. CONCLUSION: Chronological age and age at menarche are important explanatory factors of BMI in adolescents. Earlier menarche is associated with higher BMI, underscoring the importance of considering pubertal development when evaluating nutritional status during this stage of life. |
| format | Article |
| id | oai:cris.upeu.edu.pe:20.500.15037/229 |
| institution | UPeU |
| language | English |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
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| spelling | oai:cris.upeu.edu.pe:20.500.15037/2292026-11-02T12:57:04ZAge at menarche and chronological age as explanatory factors of BMI: a cross-sectional study among Peruvian adolescentsGálvez-Díaz, Norma Del CarmenJavier Aliaga, David JoelCasas-Gálvez, ChristianBarreto-Espinoza, Luz AntoniaSaintila, JacksaintCalizaya Milla, Yaquelin EvelingMenarcheAdolescentAge factorsbody mass indexnutritional statusPeruBACKGROUND: Age at menarche has been associated with various indicators of adolescent health, including body mass index (BMI). However, its specific contribution to BMI across different geographical contexts remains largely unexplored. OBJECTIVE: To analyze whether chronological age and age at menarche act as explanatory factors of BMI in a sample of Peruvian adolescents. METHODS: This was an explanatory study. A non-probabilistic sample of 423 adolescents from Lambayeque, Peru, was included. A structured data collection sheet was used to assess age at menarche, as well as weight and height. RESULTS: The multiple regression model identified age at menarche and chronological age as significant predictors of BMI. Model 2 demonstrated a better fit (BIC = 1658 vs. BIC = 1669 in Model 1) and explained 31% of the variability in BMI (adjusted R² = 0.310, F = 96.018, p < 0.001). A negative effect of age at menarche on BMI was observed (β = -0.161, p < 0.001), indicating that earlier menarche is associated with higher BMI. Similarly, chronological age had a significant positive effect (β = 0.516, p < 0.001) and was the variable with the greatest impact on BMI. CONCLUSION: Chronological age and age at menarche are important explanatory factors of BMI in adolescents. Earlier menarche is associated with higher BMI, underscoring the importance of considering pubertal development when evaluating nutritional status during this stage of life.Articlehttps://pubmed.ncbi.nlm.nih.gov/41286842https://doi.org/10.1186/s12905-025-04181-5PMC1275154210.1186/s12905-025-04181-5https://hdl.handle.net/20.500.15037/22941286842W4416598319enBMC Women s Health1472-68742025-11-242026-06-13T08:04:08Z2026-06-13T08:04:08Z |
| spellingShingle | Menarche Adolescent Age factors body mass index nutritional status Peru Gálvez-Díaz, Norma Del Carmen Javier Aliaga, David Joel Casas-Gálvez, Christian Barreto-Espinoza, Luz Antonia Saintila, Jacksaint Calizaya Milla, Yaquelin Eveling Age at menarche and chronological age as explanatory factors of BMI: a cross-sectional study among Peruvian adolescents |
| title | Age at menarche and chronological age as explanatory factors of BMI: a cross-sectional study among Peruvian adolescents |
| title_full | Age at menarche and chronological age as explanatory factors of BMI: a cross-sectional study among Peruvian adolescents |
| title_fullStr | Age at menarche and chronological age as explanatory factors of BMI: a cross-sectional study among Peruvian adolescents |
| title_full_unstemmed | Age at menarche and chronological age as explanatory factors of BMI: a cross-sectional study among Peruvian adolescents |
| title_short | Age at menarche and chronological age as explanatory factors of BMI: a cross-sectional study among Peruvian adolescents |
| title_sort | age at menarche and chronological age as explanatory factors of bmi a cross sectional study among peruvian adolescents |
| topic | Menarche Adolescent Age factors body mass index nutritional status Peru |
| topic_facet | Menarche Adolescent Age factors body mass index nutritional status Peru |
| url | https://pubmed.ncbi.nlm.nih.gov/41286842 https://doi.org/10.1186/s12905-025-04181-5 https://hdl.handle.net/20.500.15037/229 |
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