Document Detail

[Secular trends in age at menarche in relation to body mass index].
MedLine Citation:
PMID:  22666736     Owner:  NLM     Status:  In-Data-Review    
OBJECTIVE: To evaluate the secular trend of menarche according to body mass index (BMI).
SUBJECTS AND METHODS: Six hundred and eighty five girls (7-18 years) assessed in 2001 were compared with 750 evaluated in 2010. They were grouped by BMI Z-score: (thin + normal) and (overweight + obese). Menarche was reported by status quo and age at menarche estimated by a logit model. We used the Qui-square test, Mann-Whitney test, and Logistic Regression, at a 5% significance level.
RESULTS: Menarche advanced 3.24 months. There was an increase in obesity, and a decrease of the prevalence of normal girls. Menarche was anticipated by 1.44 month in the thin + normal group and by 5.76 months in the overweight + obese group. There was no interaction between the effects determined by the evaluated period and nutritional diagnosis.
CONCLUSIONS: Although both the period and BMI influence the menarche, one cannot attribute this advance only to changes in the nutritional profile of the sample. Other factors that were not tested may also contribute to this finding.
Silvia Diez Castilho; Caroline Damasceno Pinheiro; Caroline Agnelli Bento; Antônio de Azevedo Barros-Filho; Monize Cocetti
Publication Detail:
Type:  English Abstract; Journal Article    
Journal Detail:
Title:  Arquivos brasileiros de endocrinologia e metabologia     Volume:  56     ISSN:  1677-9487     ISO Abbreviation:  Arq Bras Endocrinol Metabol     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-06-05     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0403437     Medline TA:  Arq Bras Endocrinol Metabol     Country:  Brazil    
Other Details:
Languages:  por     Pagination:  195-200     Citation Subset:  IM    
Faculdade de Medicina, Pontifícia Universidade Católica de Campinas (PUC-Campinas).
Vernacular Title:
Tendência secular da idade da menarca avaliada em relação ao índice de massa corporal.
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