Evidence map›Paper›PMID 27147908›Full record

ArticlePopulation health metrics2016

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

Viviane Costa de Souza Buriol, Vânia Hirakata, Marcelo Zubaran Goldani, Clécio Homrich da Silva

Open access · goldAbstract read
In one paragraph

Article in Population health metrics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
5.8field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 44 citations in OpenAlex.

  1. Evidence of changes in the oral language in children born full-term and small for gestational age: a systematic review.Revista paulista de pediatria : orgao oficial da Sociedade de Pediatria de Sao Paulo · 2022
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  19. Low birth weight and its associated factors.Einstein (Sao Paulo, Brazil) · 2018
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Viviane Costa de Souza BuriolGraduate 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.
Vânia HirakataHospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.
Marcelo Zubaran GoldaniGraduate 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.
Clécio Homrich da SilvaGraduate 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.
Universidade Federal do Rio Grande do Sul · BRHospital de Clínicas de Porto Alegre · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo 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.

methodsThis 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.

resultsFrom 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.

conclusionsImprovements 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).

Indexed as

Information systemLow birth weightMaternal and child health

Identifiers

PMID27147908
PMCPMC4855447
OpenAlexW2347206693

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.