Telarquia y estado nutricional: Estudio epidemiológico en dos grupos étnicos

Background: Improvements in environmental conditions may result in an earlier onset of thelarche. However, its onset is not homogeneous among different population groups. Aim: To assess the relationship between nutritional status, ethnicity and age of thelarche. Material and methods: Cross-sectional...

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Autores principales:	Bustos,Patricia, Amigo,Hugo, Muzzo,Santiago, Ossa,Ximena
Lenguaje:	Spanish / Castilian
Publicado:	Sociedad Médica de Santiago 2009
Materias:	Ethnic groups Nutritional status Sexual maturation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872009001000004
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spelling	oai:scielo:S0034-988720090010000042009-12-02Telarquia y estado nutricional: Estudio epidemiológico en dos grupos étnicosBustos,PatriciaAmigo,HugoMuzzo,SantiagoOssa,Ximena Ethnic groups Nutritional status Sexual maturation Background: Improvements in environmental conditions may result in an earlier onset of thelarche. However, its onset is not homogeneous among different population groups. Aim: To assess the relationship between nutritional status, ethnicity and age of thelarche. Material and methods: Cross-sectional study of girls in second through sixth grade, attending 165 schools located in Chile's Araucania region. Of these, 231 girls who presented thelarche (breast button) were selected. The girls' surnames were used to identify their ethncity: indigenous had three or four last names of Mapuche indigenous origin (n =113), while non-indigenous were those who only had Chilean-Spanish last names (n =118). Weight, height, waist circumference and skinfold thicknesses were measured and socio-economic background information was collected through a home interview. Results: The median age of thelarche was 10 years and 4 months, regardless of ethnic group. Multivariant models showed that an increase of one z score unit of body mass index (BMI) decreased the median age of thelarche by 5.6 months (CI: -7.24 to -3.90), controlling for the effect of different covariables. A decrease in one z score of height retards the median age of thelarche by 5.5 months (CI: 4.02 to 6.98). Ethnicity did not influence the age of thelarche. Conclusions: The age of thelarche found by us is similar to that reported in international studies, it comes earlier as weight increases, is delayed as height decreases and is not related to ethnicity.info:eu-repo/semantics/openAccessSociedad Médica de SantiagoRevista médica de Chile v.137 n.10 20092009-10-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872009001000004es10.4067/S0034-98872009001000004
institution	Scielo Chile
collection	Scielo Chile
language	Spanish / Castilian
topic	Ethnic groups Nutritional status Sexual maturation
spellingShingle	Ethnic groups Nutritional status Sexual maturation Bustos,Patricia Amigo,Hugo Muzzo,Santiago Ossa,Ximena Telarquia y estado nutricional: Estudio epidemiológico en dos grupos étnicos
description	Background: Improvements in environmental conditions may result in an earlier onset of thelarche. However, its onset is not homogeneous among different population groups. Aim: To assess the relationship between nutritional status, ethnicity and age of thelarche. Material and methods: Cross-sectional study of girls in second through sixth grade, attending 165 schools located in Chile's Araucania region. Of these, 231 girls who presented thelarche (breast button) were selected. The girls' surnames were used to identify their ethncity: indigenous had three or four last names of Mapuche indigenous origin (n =113), while non-indigenous were those who only had Chilean-Spanish last names (n =118). Weight, height, waist circumference and skinfold thicknesses were measured and socio-economic background information was collected through a home interview. Results: The median age of thelarche was 10 years and 4 months, regardless of ethnic group. Multivariant models showed that an increase of one z score unit of body mass index (BMI) decreased the median age of thelarche by 5.6 months (CI: -7.24 to -3.90), controlling for the effect of different covariables. A decrease in one z score of height retards the median age of thelarche by 5.5 months (CI: 4.02 to 6.98). Ethnicity did not influence the age of thelarche. Conclusions: The age of thelarche found by us is similar to that reported in international studies, it comes earlier as weight increases, is delayed as height decreases and is not related to ethnicity.
author	Bustos,Patricia Amigo,Hugo Muzzo,Santiago Ossa,Ximena
author_facet	Bustos,Patricia Amigo,Hugo Muzzo,Santiago Ossa,Ximena
author_sort	Bustos,Patricia
title	Telarquia y estado nutricional: Estudio epidemiológico en dos grupos étnicos
title_short	Telarquia y estado nutricional: Estudio epidemiológico en dos grupos étnicos
title_full	Telarquia y estado nutricional: Estudio epidemiológico en dos grupos étnicos
title_fullStr	Telarquia y estado nutricional: Estudio epidemiológico en dos grupos étnicos
title_full_unstemmed	Telarquia y estado nutricional: Estudio epidemiológico en dos grupos étnicos
title_sort	telarquia y estado nutricional: estudio epidemiológico en dos grupos étnicos
publisher	Sociedad Médica de Santiago
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872009001000004
work_keys_str_mv	AT bustospatricia telarquiayestadonutricionalestudioepidemiologicoendosgruposetnicos AT amigohugo telarquiayestadonutricionalestudioepidemiologicoendosgruposetnicos AT muzzosantiago telarquiayestadonutricionalestudioepidemiologicoendosgruposetnicos AT ossaximena telarquiayestadonutricionalestudioepidemiologicoendosgruposetnicos
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Telarquia y estado nutricional: Estudio epidemiológico en dos grupos étnicos

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