Edad de la menarquia y su relación con el nivel socioeconómico e índice de masa corporal / Age of menarche and its relationship with body mass index and socioeconomic status
Rev. méd. Chile
; 135(11): 1429-1436, nov. 2007. graf, tab
Artigo
em Espanhol
| LILACS
| ID: lil-472842
Biblioteca responsável:
BR1.1
ABSTRACT
Background:
A decline in the age of menarche was observed from early 1900s to the 1970s. However, it is not known if a further decline ocurred thereafter.Aim:
To evaluate the age of menarche in girls from Santiago, Chile and its relationship with body mass index (BMI) and socioeconomic status. Material andMethods:
We studied 1302 healthy girls aged 7 to 19 years. Age of menarche was evaluated through a questionnaire to the patient and her parents. Kaplan-Meier curves were used to determine age of menarche and Cox regression analysis was employed to evaluate the effect of the type of school and BMI on the age of menarche.Results:
The mean age at menarche was 12.7±0.04 years. Girls from public and private schools had their period at 12.5±0.1 and 13.05±0.05 years respectively. A negative correlation between z scores for BMIand age of menarche was observed (r-0.3 p =0.001). Girls whose menarche occurred before 11.5 years had higher z scores for BMI and a larger proportion were overweight, compared to girls who had menarche later. Cox regression analysis showed that after adjusment for BMI, age of menarche was similar in both types of schools.Conclusions:
Age of menarche is ocurring three months earlier in girls from public schools, which is associated with higher z scores for BMI. Type of school, a marker of socio-economic status in Chile, affects timing of menarche due to differences in body mass index.
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Assunto principal:
Classe Social
/
Menarca
/
Índice de Massa Corporal
/
Obesidade
Tipo de estudo:
Estudo prognóstico
Aspecto:
Determinantes sociais da saúde
Limite:
Adolescente
/
Criança
/
Feminino
/
Humanos
País/Região como assunto:
América do Sul
/
Chile
Idioma:
Espanhol
Revista:
Rev. méd. Chile
Assunto da revista:
Medicina
Ano de publicação:
2007
Tipo de documento:
Artigo
/
Documento de projeto
País de afiliação:
Chile
Instituição/País de afiliação:
Hospital Roberto del Río/CL
/
Universidad de Chile/CL