Evolución del estado nutricional en una cohorte de escolares chilenos: ¿Un cambio real o ficticio?

Background: Considering the high prevalence of obesity among children attending elementary schools, it is important to know the evolution of body weight when these children reach adolescent. Aim: To analyze the changes in nutritional status of children between the first year of elementary school and...

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Autores principales:	Loaiza M,Susana, Taibo G,Marcela, Cornejo,Amalia, Atalah S,Eduardo
Lenguaje:	Spanish / Castilian
Publicado:	Sociedad Médica de Santiago 2009
Materias:	Adolescent Body mass index Nutrition assessment
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872009001100006
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spelling	oai:scielo:S0034-988720090011000062010-01-13Evolución del estado nutricional en una cohorte de escolares chilenos: ¿Un cambio real o ficticio?Loaiza M,SusanaTaibo G,MarcelaCornejo,AmaliaAtalah S,Eduardo Adolescent Body mass index Nutrition assessment Background: Considering the high prevalence of obesity among children attending elementary schools, it is important to know the evolution of body weight when these children reach adolescent. Aim: To analyze the changes in nutritional status of children between the first year of elementary school and the first year of high school. Material and methods: A historical cohort of children that were assessed when they started elementary school in 1997 was evaluated again eight years later Weight and height were measured and body mass index (BMI) was calculated. Obesity was considered as a BMI over percentile 95 of Center for Disease Control (CDC) references. The concordance between nutritional assessment in both periods and the risk of obesity during adolescence, based on previous weight were also calculated. Results: Data from 117,815 children were analyzed. The prevalence of obesity in the first year of elementary school and the first year of high school was 14.6% and 7%, respectively. The mean weight increase during the eight years period was 32.6±8.4 kg corresponding to 108%±28.1% of the expected increase. There was a low diagnostic concordance between both assessment periods. There was a reduction of under and overweight and a higher proportion of subjects with normal weight in the second assessment period. The risk for being obese in the first year of high school was 6.4 times greater for children that were obese in the first year of elementary school (confidence intervals 6.1-6.9. Conclusions: There was an important reduction in the proportion of obesity between the age of 6 and 14 years. The risk of obesity at 14 years of age was strongly influenced by the presence of obesity at 6 years of age. The broader BMIranges for normality for high school children could give a false image of the nutritional status of teenagers .info:eu-repo/semantics/openAccessSociedad Médica de SantiagoRevista médica de Chile v.137 n.11 20092009-11-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872009001100006es10.4067/S0034-98872009001100006
institution	Scielo Chile
collection	Scielo Chile
language	Spanish / Castilian
topic	Adolescent Body mass index Nutrition assessment
spellingShingle	Adolescent Body mass index Nutrition assessment Loaiza M,Susana Taibo G,Marcela Cornejo,Amalia Atalah S,Eduardo Evolución del estado nutricional en una cohorte de escolares chilenos: ¿Un cambio real o ficticio?
description	Background: Considering the high prevalence of obesity among children attending elementary schools, it is important to know the evolution of body weight when these children reach adolescent. Aim: To analyze the changes in nutritional status of children between the first year of elementary school and the first year of high school. Material and methods: A historical cohort of children that were assessed when they started elementary school in 1997 was evaluated again eight years later Weight and height were measured and body mass index (BMI) was calculated. Obesity was considered as a BMI over percentile 95 of Center for Disease Control (CDC) references. The concordance between nutritional assessment in both periods and the risk of obesity during adolescence, based on previous weight were also calculated. Results: Data from 117,815 children were analyzed. The prevalence of obesity in the first year of elementary school and the first year of high school was 14.6% and 7%, respectively. The mean weight increase during the eight years period was 32.6±8.4 kg corresponding to 108%±28.1% of the expected increase. There was a low diagnostic concordance between both assessment periods. There was a reduction of under and overweight and a higher proportion of subjects with normal weight in the second assessment period. The risk for being obese in the first year of high school was 6.4 times greater for children that were obese in the first year of elementary school (confidence intervals 6.1-6.9. Conclusions: There was an important reduction in the proportion of obesity between the age of 6 and 14 years. The risk of obesity at 14 years of age was strongly influenced by the presence of obesity at 6 years of age. The broader BMIranges for normality for high school children could give a false image of the nutritional status of teenagers .
author	Loaiza M,Susana Taibo G,Marcela Cornejo,Amalia Atalah S,Eduardo
author_facet	Loaiza M,Susana Taibo G,Marcela Cornejo,Amalia Atalah S,Eduardo
author_sort	Loaiza M,Susana
title	Evolución del estado nutricional en una cohorte de escolares chilenos: ¿Un cambio real o ficticio?
title_short	Evolución del estado nutricional en una cohorte de escolares chilenos: ¿Un cambio real o ficticio?
title_full	Evolución del estado nutricional en una cohorte de escolares chilenos: ¿Un cambio real o ficticio?
title_fullStr	Evolución del estado nutricional en una cohorte de escolares chilenos: ¿Un cambio real o ficticio?
title_full_unstemmed	Evolución del estado nutricional en una cohorte de escolares chilenos: ¿Un cambio real o ficticio?
title_sort	evolución del estado nutricional en una cohorte de escolares chilenos: ¿un cambio real o ficticio?
publisher	Sociedad Médica de Santiago
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872009001100006
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Evolución del estado nutricional en una cohorte de escolares chilenos: ¿Un cambio real o ficticio?

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