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Birth weight and risk of childhood solid tumors in Brazil: a record linkage between population-based data sets

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Date
2017
Author
Silva, Neimar de Paula
Reis, Rejane de Souza
Cunha, Rafael Garcia
Oliveira, Julio Fernando
Lima, Fernanda Cristina da Silva de
Pombo-de-Oliveira, Maria Socorro
Santos, Marceli Oliveira
Camargo, Beatriz de
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Abstract
Objective. To analyze the relationship between the development of childhood solid tumors and 1) birth weight and 2) fetal growth, using two Brazilian population-based data sets. Methods. A case–cohort study was performed using two population-based data sets, and linkage between the Live Birth Information System (Sistema de Informação sobre Nascidos Vivos, SINASC) and 14 population-based cancer registries (PBCRs) was established. Four controls per case were chosen randomly from the SINASC data set. Tumors were classified as central nervous system (CNS), non-CNS embryonal, and other tumors (“miscellaneous”). Adjustments were made for potential confounders (maternal age, mode of delivery, maternal education, birth order, gestational age, sex, and geographic region). Odds ratios (ORs) with 95% confidence intervals (CIs) were computed using unconditional logistic regression analysis. Results. In a trend analysis, for every 500 g of additional birth weight, the crude OR was 1.12 (CI: 1.00–1.24) and the adjusted OR was 1.02 (CI: 0.90–1.16) for all tumors. For every 1 000 g of additional birth weight, the crude OR was 1.25 (CI: 1.00–1.55) and the adjusted OR was 1.04 (CI: 0.82–1.34) for all tumors. Among children diagnosed after reaching the age of 3 years, in the miscellaneous tumor category, the OR was significantly increased for every additional 500 g and 1 000 g of birth weight. Conclusions. The study data suggested that increased birth weight was associated with childhood solid tumor development, especially among children more than 3 years old with “miscellaneous” tumors.
 
Objetivo. Analizar la relación entre la aparición de tumores sólidos en la niñez y 1) el peso al nacer y 2) el crecimiento fetal, a partir de dos conjuntos de datos poblacionales del Brasil. Métodos. Se efectuó un estudio de casos en una cohorte a partir de dos conjuntos de datos poblacionales y se vinculó el sistema de información de nacidos vivos (Sistema de Informação sobre Nascidos Vivos, SINASC) con 14 registros oncológicos poblacionales. Se eligieron al azar cuatro controles por caso del conjunto de datos del SINASC. Los tumores se clasificaron en tres tipos: del sistema nervioso central (SNC), embrionarios ajenos al SNC y otros (“misceláneos”). Se hicieron ajustes en función de los posibles factores de confusión (edad materna, modalidad de parto, educación materna, orden de nacimiento, edad gestacional, sexo y región geográfica) y se calcularon las razones de posibilidad (OR) con un intervalo de confianza (IC) del 95 % mediante análisis de la regresión logística incondicional. Resultados. En el análisis de las tendencias, se observó que, en todos los tumores, cada 500 g adicionales de peso al nacer la OR bruta fue de 1,12 (IC: 1,00-1,24) y la OR ajustada, de 1,02 (IC: 0,90-1,16), mientras que, cada 1 000 g adicionales, la OR bruta fue de 1,25 (IC: 1,00-1,55) y la OR ajustada, de 1,04 (IC: 0,82-1,34). En cuanto a los niños diagnosticados después de los 3 años de edad, en la categoría de tumores misceláneos, la OR fue significativamente más alta con cada 500 g y 1 000 g adicionales de peso al nacer. Conclusiones. Los datos del estudio indican que el peso alto al nacer está asociado a la aparición de tumores sólidos en la niñez, especialmente de la categoría “misceláneos” y en los niños mayores de 3 años de edad.
 
Translated title
El peso al nacer y el riesgo de formación de tumores sólidos en la niñez en el Brasil: vinculación de registros entre conjuntos de datos poblacionales
Series
Rev Panam Salud Publica;41, ene. 2017
Subject
Child Health; Neoplasms; Birth Weight; Fetal Development; Registries; Brazil; Salud del Niño; Neoplasias; Peso al Nacer; Desarrollo Fetal; Sistema de Registros
Category of PAHO Strategic Plan 2014-2019
Cat 2. Noncommunicable Diseases and Risk Factors; Cat 3. Determinants of Health and Promoting Health throughout the Life Course
URI
https://iris.paho.org/handle/10665.2/33844
Citation
de Paula Silva N, de Souza Reis R, Cunha RG, Oliveira JF, da Silva de Lima FC, Pombo-de-Oliveira MS, et al. Birth weight and risk of childhood solid tumors in Brazil: a record linkage between populationbased data sets. Rev Panam Salud Publica. 2017;41:e14.
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  • Pan American Journal of Public Health

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