scholarly journals Factors associated with low birth weight at term: a population-based linkage study of the 100 million Brazilian cohort

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Ila R. Falcão ◽  
Rita de Cássia Ribeiro-Silva ◽  
Marcia F. de Almeida ◽  
Rosemeire L. Fiaccone ◽  
Aline dos S. Rocha ◽  
...  

Abstract Background Factors associated with low birth weight at term (TLBW), a proxy for intrauterine growth restriction (IUGR), are not well-elucidated in socioeconomically vulnerable populations. This study aimed to identify the factors associated with TLBW in impoverished Brazilian women. Methods Records in the 100 Million Brazilian Cohort database were linked to those in the National System of Information on Live Births (SINASC) to obtain obstetric, maternal, birth and socioeconomic data between 2001 and 2015. Multivariate logistic regression was performed to investigate associations between variables of exposure and TLBW. Results Of 8,768,930 term live births analyzed, 3.7% presented TLBW. The highest odds of TLBW were associated with female newborns (OR: 1.49; 95% CI: 1.47–1.50), whose mothers were black (OR: 1.20; 95% CI: 1.18–1.22), had a low educational level (OR: 1.57; 95% CI: 1.53–1.62), were aged ≥35 years (OR: 1.44; 95% CI: 1.43–1.46), had a low number of prenatal care visits (OR: 2.48; 95% CI: 2.42–2.54) and were primiparous (OR: 1.62; 95% CI: 1.60–1.64). Lower odds of TLBW were found among infants whose mothers lived in the North, Northeast and Center-West regions of Brazil compared to those in the South. Conclusion Multiple aspects were associated with TLBW, highlighting the need to comprehensively examine the mechanisms underlying these factors, especially in more vulnerable Brazilian populations, in order to contribute to the elaboration of health policies and promote better conditions of life for poor and extremely poor mothers and children.

2016 ◽  
Vol 25 (4) ◽  
Author(s):  
Maria Aparecida Munhoz Gaiva ◽  
Elizabeth Fujimori ◽  
Ana Paula Sayuri Sato

ABSTRACT This was a cross-sectional study that investigated maternal and child factors associated with neonatal mortality. Data was obtained from the Live Births and Mortality Information Systems integrated by linkage. A total of 9,349 live births and 78 deaths in the neonatal period, which occurred in 2010 in Cuiabá-MT were analyzed. Univariate and multivariate analyzes were performed. In the multiple logistic regression, neonatal mortality was associated with: maternal age less than 20 years; prematurity; low birth weight; Apgar score less than seven at 1 and 5 minutes; and presence of congenital anomaly. The results highlight the need to improve the quality of prenatal care in order to prevent low birth weight and prematurity. The association between neonatal death and low Apgar score at 1 and 5 minutes indicates the importance of investments in delivery care.


2019 ◽  
Vol 6 (2) ◽  
pp. 184-194
Author(s):  
Lydia Febrina ◽  
Triana Sri Herdjanti ◽  
Siti Nikmah

Low Birth Weight (LBW) is the proportion of live births weighing less than 2,500 grams and 20 times the chance of dying in infancy. LBW is the result of premature birth (<37 weeks' gestation) or impaired intrauterine growth. Neonatal mortality is one of the indicators determining the health and welfare of children. IMR in Banjarnegara Regency in 2015 was 13.23 per 1,000 live births which in absolute terms still ranked highest in Central Java Province. The formulation of the problem is risk factors of low birth weight  at Karang Kobar Health Center in Banjarnegara Regency in 2018. This research is a descriptive analytic study using case control study design. The research sample was taken from the total number of LBW in January to December 2017. Data were analyzed univariate and bivariate. The results of the study, the factors associated with the incidence of LBW are the factors of maternal age during pregnancy, gestational age, anemia, and nutrition pregnant women.


2010 ◽  
Vol 44 (5) ◽  
pp. 767-775 ◽  
Author(s):  
Antônio Augusto Moura da Silva ◽  
Leopoldo Muniz da Silva ◽  
Marco Antonio Barbieri ◽  
Heloísa Bettiol ◽  
Luciana Mendes de Carvalho ◽  
...  

OBJECTIVE: To examine whether the low birth weight (LBW) paradox exists in Brazil. METHODS: LBW and cesarean section rates between 1995 and 2007 were estimated based on data from SINASC (Brazilian Live Births Database). Infant mortality rates (IMRs) were obtained using an indirect method that correct for underreporting. Schooling information was obtained from census data. Trends in LBW rate were assessed using joinpoint regression models. The correlations between LBW rate and other indicators were graphically assessed by lowess regression and tested using Spearman's rank correlation. RESULTS: In Brazil, LBW rate trends were non-linear and non-significant: the rate dropped from 7.9% in 1995 to 7.7% in 2000, then increased to 8.2% in 2003 and remained nearly steady thereafter at 8.2% in 2007. However, trends varied among Brazilian regions: there were significant increases in the North from 1999 to 2003 (2.7% per year), and in the South (1.0% per year) and Central-West regions (0.6% per year) from 1995 to 2007. For the entire period studied, higher LBW and lower IMRs were seen in more developed compared to less developed regions. In Brazilian States, in 2005, the higher the IMR rate, the lower the LBW rate (p=0.009); the lower the low schooling rate, the lower the LBW rate (p=0.007); the higher the number of neonatal intensive care beds per 1,000 live births, the higher the LBW rate (p=0.036). CONCLUSIONS: The low birth weight paradox was seen in Brazil. LBW rate is increasing in some Brazilian regions. Regional differences in LBW rate seem to be more associated to availability of perinatal care services than underlying social conditions.


Rev Rene ◽  
2021 ◽  
Vol 22 ◽  
pp. e68012
Author(s):  
Rubia Mariana de Souza Santos ◽  
Sonia Silva Marcon ◽  
Verônica Francisqueti Marquete ◽  
Aroldo Gavioli ◽  
Ana Maria Nunes da Silva ◽  
...  

Objective: to estimate the prevalence and verify the factors associated with low birth weight in full-term newborns. Methods: this is a retrospective study conducted with 24,744 newborns. Data were retrieved from the Sistema de Informação sobre Nascidos Vivos (Information System on Live Births). For the analysis, multiple logistic regression was used using the hierarchical model with maternal, gestational, and care variables. Results: the prevalence of low birth weight was 2.4%, with 51.0% of cases in male newborns, 73.7% in women aged 20-34 years; 56.5% were multiparous and 95.0% had eight years of education or more. In the multiple analysis, the association of low weight with the number of prenatal consultations, newborn’s birth order, and sex were observed. Conclusion: the factors associated with low birth weight in full-term newborns were male sex, multiparity, and less than seven prenatal consultations.


2020 ◽  
Vol 36 (4) ◽  
Author(s):  
Antônio Augusto Moura da Silva ◽  
Carolina Abreu de Carvalho ◽  
Heloísa Bettiol ◽  
Marcelo Z. Goldani ◽  
Fernando Lamy Filho ◽  
...  

Abstract: A trend towards increasing birth weight has been shown, but factors that explain these trends have not been elucidated. The objectives of this study were to evaluate changes in mean birth weight of term newborns and to identify factors associated with them. All cohorts are population-based studies in which random samples of births (Ribeirão Preto, São Paulo State in 1978/1979, 1994 and 2010; Pelotas, Rio Grande do Sul State in 1982, 1993 and 2004; and São Luís, Maranhão State in 1997/1998 and 2010, Brazil). A total of 32,147 full-term, singleton live births were included. Mean birth weight reduced in the first study period (-89.1g in Ribeirão Preto from 1978/1979 to 1994, and -27.7g in Pelotas from 1982 to 1993) and increased +30.2g in Ribeirão Preto from 1994 to 2010 and +24.7g in São Luís from 1997 to 2010. In the first period, in Ribeirão Preto, mean birth weight reduction was steeper among mothers with high school education and among those born 39-41 weeks. In the second period, the increase in mean birth weight was steeper among mothers with low schooling in Ribeirão Preto and São Luís, females and those born 37-38 weeks in Ribeirão Preto and cesarean section in São Luís. Birth weight decreased in the first study period then increased thereafter. The variables that seem to have been able to explain these changes varied over time.


2011 ◽  
Vol 51 (3) ◽  
pp. 144 ◽  
Author(s):  
I Made Kardana

Background Neonatal sepsis is one of the major causes of mortality and long term morbidity in neonates, particularly in premature and low birth weight infants. The incidence of neonatal sepsis varies from 1 to 4 in 1000 live births in developed countries and 10 to 50 in 1000 live births in developing countries. The mortality rate of neonatal sepsis remains high, especially in developing countries.Objective To describe the incidence, mortality rate, and factors associated 'With mortality in neonatal sepsis in Sanglah Hospital, Denpasar.Methods A retrospective, cohort study was conducted in the Perinatology Ward, Department of Child Health, Sanglah Hospital, Denpasar, Bali from January to December 2008. One hundred thirty􀁄eight patients 'With neonatal sepsis were enrolled in this study. Patients' characteristic data were collected including sex, mode of delivery (spontaneous, non􀁄spontaneous), condition at birth (vigorous, asphyxic), gestational age (premature, full tenn), birth weight «2500 grams, > 2500 grams), and sepsis classifica􀁄tion (early onset sepsis, late onset sepsis). Outcomes were grouped into alive and dead.Results A total of 138 cases of neonatal sepsis were reviewed, 59.4% of whom were boys, 63.0% spontaneously delivered,39.1 % asphyxic, 53.6% 'With low birth weight, 50.7% premature, and84.8% with early onset sepsis. The incidence of neonatal sepsis was 5% of babies admitted, 'With a mortality rate of 28.3%. Low birth weight and prematurity were significantly associated withmortality in neonatal sepsis (RR8.4, 95% CI 2.4 to 29.0, P = 0.001 and RR3.4, 95% ClI.O to 11.0, P 􀀂 0.042, respectively). Conclusion The incidence of neonatal sepsis in Sanglah Hospital was 5% of babies admitted, with a mortality rate of 28.3%. Low birth weight and prematurity were significantly associated with mortality in neonatal sepsis. 2011;51:144-8].


Author(s):  
Sylvia Kirchengast ◽  
Beda Hartmann

The COVID 19 pandemic represents a major stress factor for non-infected pregnant women. Although maternal stress during pregnancy increases the risk of preterm birth and intrauterine growth restriction, an increasing number of studies yielded no negative effects of COVID 19 lockdowns on pregnancy outcome. The present study focused on pregnancy outcome during the first COVID 19 lockdown phase in Austria. In particular, it was hypothesized that the national lockdown had no negative effects on birth weight, low birth weight rate and preterm birth rate. In a retrospective medical record-based single center study, the outcome of 669 singleton live births in Vienna Austria during the lockdown phase between March and July 2020 was compared with the pregnancy outcome of 277 live births at the same hospital during the pre-lockdown months of January and February 2020 and, in addition, with the outcome of 28,807 live births between 2005 and 2019. The rate of very low gestational age was significantly lower during the lockdown phase than during the pre-lockdown phase. The rate of low gestational age, however, was slightly higher during the lockdown phase. Mean birth weight was significantly higher during the lockdown phase; the rates of low birth weight, very low birth weight and extremely low birth weight were significantly lower during the lockdown phase. In contrast, maternal gestational weight gain was significantly higher during the lockdown phase. The stressful lockdown phase in Austria seems to have no negative affect on gestational length and newborn weight among non-infected mothers.


Author(s):  
Charles Algert ◽  
Christine Roberts ◽  
Pamela Adelson ◽  
Michael Frommer

Sign in / Sign up

Export Citation Format

Share Document