Temporal evolution of the risk factors associated with low birth weight rates in Brazilian capitals (1996-2011)

doi:10.1186/s12963-016-0086-0

. 2016 May 3:14:15.

doi: 10.1186/s12963-016-0086-0. eCollection 2016.

Temporal evolution of the risk factors associated with low birth weight rates in Brazilian capitals (1996-2011)

Viviane Costa de Souza Buriol¹, Vânia Hirakata², Marcelo Zubaran Goldani³, Clécio Homrich da Silva³

Affiliations

¹ Graduate Program in Child and Adolescent Health, School of Medicine, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2400/2° andar. Barrio Santa Cecilia, Porto Alegre, RS 90035-003 Brazil ; Child and Adolescent Health Study Centre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
² Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.
³ Graduate Program in Child and Adolescent Health, School of Medicine, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2400/2° andar. Barrio Santa Cecilia, Porto Alegre, RS 90035-003 Brazil ; Child and Adolescent Health Study Centre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil ; Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil ; Department of Pediatrics, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.

PMID: 27147908
PMCID: PMC4855447
DOI: 10.1186/s12963-016-0086-0

Temporal evolution of the risk factors associated with low birth weight rates in Brazilian capitals (1996-2011)

Viviane Costa de Souza Buriol et al. Popul Health Metr. 2016.

. 2016 May 3:14:15.

doi: 10.1186/s12963-016-0086-0. eCollection 2016.

Authors

Viviane Costa de Souza Buriol¹, Vânia Hirakata², Marcelo Zubaran Goldani³, Clécio Homrich da Silva³

Affiliations

¹ Graduate Program in Child and Adolescent Health, School of Medicine, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2400/2° andar. Barrio Santa Cecilia, Porto Alegre, RS 90035-003 Brazil ; Child and Adolescent Health Study Centre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
² Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.
³ Graduate Program in Child and Adolescent Health, School of Medicine, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2400/2° andar. Barrio Santa Cecilia, Porto Alegre, RS 90035-003 Brazil ; Child and Adolescent Health Study Centre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil ; Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil ; Department of Pediatrics, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.

PMID: 27147908
PMCID: PMC4855447
DOI: 10.1186/s12963-016-0086-0

Abstract

Objective: To analyze the trend of low birth weight (LBW) and its determinants in Brazilian state capitals between 1996 and 2011. We intended to determine which variables are associated with LBW during the period studied.

Methods: This is a cross-sectional study that used data from the National Information System of Live Births from 26 state capitals and Brasilia (the federal capital), divided into five geographical regions. The Average Annual Percentage of Change (AAPC) was used to assess the possible time trend in the low birth weight rates for considering all regions together and each region separately, according to each variable, and the Poisson regression was calculated in order to demonstrate time trends in low birth weight and the impact of variables (age and educational maternal level, antenatal visits, type of delivery, and gestational age) during the period. All variables were analyzed together using the Poisson regression as well.

Results: From the total of 11,200,255 live births used in this study, there was a significant reduction in the number of live births, especially in the more developed regions. The low birth weight rate was 8 %, and it was stable during the period. Considering regional trends, the rate was higher in the Southeast and South regions, and significantly higher in the North, Northeast, and Central West regions. Improvements in maternal education and antenatal care coverage reduced the risk for low birth weight in all regions. Also, there was an increase in caesarean sections in all regions, with a small impact on low birth weight rates.

Conclusions: Improvements in education and health care reduced the risk for low birth weight in all Brazilian regions during the period of study. Trends in low birth weight rates and the associated factors differ from region to region, showing different stages of demographic, epidemiological and developmental transition in Brazil. The present study was approved by the Research Ethics Committee at the Hospital de Clínicas de Porto Alegre (Protocol 120323).

Keywords: Information system; Low birth weight; Maternal and child health.

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References

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[1] World Health Organization The incidence of low birth weight: a critical review of available information. World Health Stat Q. 1980;33(3):197–224. - PubMed

[2] World Health Organization The incidence of low birth weight: a critical review of available information. World Health Stat Q. 1980;33(3):197–224. - PubMed

[3] Uchimura TT, Szarfarc SC, Uchimura NS, Bercini LO. Índice de proporcionalidade do baixo peso ao nascer ea sua relação com a mortali dade neonatal. Acta Scientiarum Health Science. 2001;23(3):753–7.

[4] Uchimura TT, Szarfarc SC, Uchimura NS, Bercini LO. Índice de proporcionalidade do baixo peso ao nascer ea sua relação com a mortali dade neonatal. Acta Scientiarum Health Science. 2001;23(3):753–7.

[5] Baldin PEA, Nogueira PCK. Fatores de risco para mortalidade infantil pós-neonatal. Rev Paul Pediatr. 2008;26(3):156–60.

[6] Baldin PEA, Nogueira PCK. Fatores de risco para mortalidade infantil pós-neonatal. Rev Paul Pediatr. 2008;26(3):156–60.

[7] Alberto SA, et al. Fatores associados aos óbitos neonatais e pós-neonatais em Moçambique. R bras Est Pop Rio de Janeiro. 2011;28(1):203-216.

[8] Alberto SA, et al. Fatores associados aos óbitos neonatais e pós-neonatais em Moçambique. R bras Est Pop Rio de Janeiro. 2011;28(1):203-216.

[9] McCormick MC. The contribution of low birth weight to infant mortality and childhood morbidity. N Engl J Med. 1985;312(2):82–90. doi: 10.1056/NEJM198501103120204. - DOI - PubMed

[10] McCormick MC. The contribution of low birth weight to infant mortality and childhood morbidity. N Engl J Med. 1985;312(2):82–90. doi: 10.1056/NEJM198501103120204. - DOI - PubMed

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Temporal evolution of the risk factors associated with low birth weight rates in Brazilian capitals (1996-2011)

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Temporal evolution of the risk factors associated with low birth weight rates in Brazilian capitals (1996-2011)

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