TY - JOUR
T1 - Prevalence of preterm birth according to birth weight group
T2 - A systematic review
AU - Silveira, Mariângela F.
AU - Matijasevich, Alicia
AU - Horta, Bernardo L.
AU - Bettiol, Heloisa
AU - Barbieri, Marco Antônio
AU - Silva, Antonio A.
AU - Rondó, Patricia H C
AU - Lunardelli, Abelardo N.
AU - Peres, Marco A.
AU - Gurgel, Ricardo Q.
AU - Cunha, Antônio L.
AU - Calvano, Luiza M.
AU - Amin, Joffre
AU - Leal, Maria do C
AU - Matos, Ana Cristina Guimarães
AU - Maranhão, Ana Goretti
AU - Cortez-Escalante, Juan José
AU - Barros, Aluísio J D
AU - Barros, Fernando C.
AU - Victora, Cesar G.
PY - 2013/10
Y1 - 2013/10
N2 - Objective: To estimate the prevalence of preterm birth by categories of birth weight, and to obtain an equation to correct the estimates. Methods: Systematic review of the Brazilian literature published from 1990 to 2012, to identify studies with primary collection of data on birth weight and gestational age. Twelve studies were selected and contributed for tabulations of preterm prevalence according to 100 g birth weight categories. These results were combined using sex-specific fractional polynomial equations and the resulting curves were compared with results from the Live Birth Information System for the years 2000, 2005, 2010 and 2011. Results: For all birth weight categories, preterm prevalence estimates based on primary studies had a higher prevalence than those of the the Live Birth Information System. The prevalence reported by the Live Birth Information System was of 7.2% in 2010, about 38.0% lower than the estimated prevalence of 11.7% obtained with the correctional equation. Conclusions: Information reported by the Live Birth Information System on preterm prevalence does not reflect the true magnitude of the problem in Brazil, and should not be used without the correction factors proposed in the present analyses.
AB - Objective: To estimate the prevalence of preterm birth by categories of birth weight, and to obtain an equation to correct the estimates. Methods: Systematic review of the Brazilian literature published from 1990 to 2012, to identify studies with primary collection of data on birth weight and gestational age. Twelve studies were selected and contributed for tabulations of preterm prevalence according to 100 g birth weight categories. These results were combined using sex-specific fractional polynomial equations and the resulting curves were compared with results from the Live Birth Information System for the years 2000, 2005, 2010 and 2011. Results: For all birth weight categories, preterm prevalence estimates based on primary studies had a higher prevalence than those of the the Live Birth Information System. The prevalence reported by the Live Birth Information System was of 7.2% in 2010, about 38.0% lower than the estimated prevalence of 11.7% obtained with the correctional equation. Conclusions: Information reported by the Live Birth Information System on preterm prevalence does not reflect the true magnitude of the problem in Brazil, and should not be used without the correction factors proposed in the present analyses.
KW - Birth certificates
KW - Infant, low birth weight
KW - Infant, premature
KW - Prevalence
KW - Review
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U2 - 10.1590/S0034-8910.2013047004997
DO - 10.1590/S0034-8910.2013047004997
M3 - Article
C2 - 24626505
AN - SCOPUS:84895118553
VL - 47
SP - 992
EP - 1003
JO - Revista de Saude Publica
JF - Revista de Saude Publica
SN - 0034-8910
IS - 5
ER -