Maternal educational inequalities about adverse pregnancy outcomes observed in a rural area of a province of China during a time period (2010–2018)

2022 ◽  
pp. jech-2021-217754
Author(s):  
Lixin Li ◽  
Yanpeng Wu ◽  
Yao Yang ◽  
Ying Wu ◽  
Yan Zhuang ◽  
...  

BackgroundThe relationship between maternal education and adverse pregnancy outcomes is well documented. However, limited research has investigated maternal educational disparities in adverse pregnancy outcomes in China. This study examined maternal educational inequalities associated with adverse pregnancy outcomes in rural China.MethodsWe conducted a population-based cohort study using participants enrolled in the National Free Preconception Health Examination Project in Yunnan province from 2010 to 2018. The primary outcome was stillbirth, and the secondary outcome was adverse pregnancy outcomes, defined as a composite event of stillbirth, preterm birth or low birth weight. The study was restricted to singleton births at 20–42 weeks’ gestation. Univariate and multivariate log-binomial regression models were performed to estimate crude risk ratios (RRs) and confounding-adjusted RRs (ARRs) for stillbirth and adverse pregnancy outcomes according to maternal education level.ResultsA total of 197 722 singleton births were included in the study. Compared with mid-educated women, low-educated women were at a significantly increased risk of stillbirth (ARR, 1.20; 95% CI, 1.05 to 1.38) and adverse pregnancy outcomes (ARR, 1.11; 95% CI, 1.07 to 1.16). However, the risk of stillbirth (ARR, 1.16; 95% CI, 1.01 to 1.35) was significantly higher for high-educated women compared with mid-educated women.ConclusionCompared with women with medium education level, women with lower education level were more likely to experience adverse pregnancy outcomes, including stillbirth, and women with higher education level were more likely to experience stillbirth.

2020 ◽  
Author(s):  
Yanpeng Wu ◽  
Lixin Li ◽  
Yanfei Wu ◽  
Rui Liao ◽  
Zijie Liu ◽  
...  

Abstract Background: Educational inequalities have been found in adverse pregnancy outcomes, but no previous study has investigated in China. This study examined the patterns of educational inequalities in the risk of adverse pregnancy outcomes in rural China and examined the mediations of birthweight and gestational age in the stillbirth and neonatal mortality. Methods: The study population consisted of 217,070 registered pregnancies in Yunnan Province during 2010–2018. Logistic regression models were performed on the association studies between education and adverse pregnancy outcomes including stillbirth, neonatal mortality, preterm birth (PTB), and low birth weight (LBW). The subgroup analysis by ethnicity was further carried out. Results: Compared to women with mid education, least educated women had a significantly increased risk of stillbirth (Adjusted OR (AOR) 1.36 [95%CI 1.19–1.56]), neonatal mortality (AOR 1.55 [1.29–1.87]), PTB (AOR 1.10 [1.04–1.16]), and LBW (AOR 1.30 [1.19–1.41]). Highly educated women showed a similar risk to least educated women in LBW. The magnitude of these associations differed among ethnic groups, among which education had a larger impact on neonatal mortality of Yi women and a smaller impact on stillbirth of Dai women. Low education level lead to stillbirth and neonatal mortality mainly by acting through birthweight. Conclusions: Education had the strongest link to neonatal mortality and the weakest link to PTB. Highly educated women also need concern on LBW. Improving education may reduce adverse pregnancy outcomes especially for Yi women in rural China.


Author(s):  
Shamil D. Cooray ◽  
Jacqueline A. Boyle ◽  
Georgia Soldatos ◽  
Shakila Thangaratinam ◽  
Helena J. Teede

AbstractGestational diabetes mellitus (GDM) is common and is associated with an increased risk of adverse pregnancy outcomes. However, the prevailing one-size-fits-all approach that treats all women with GDM as having equivalent risk needs revision, given the clinical heterogeneity of GDM, the limitations of a population-based approach to risk, and the need to move beyond a glucocentric focus to address other intersecting risk factors. To address these challenges, we propose using a clinical prediction model for adverse pregnancy outcomes to guide risk-stratified approaches to treatment tailored to the individual needs of women with GDM. This will allow preventative and therapeutic interventions to be delivered to those who will maximally benefit, sparing expense, and harm for those at a lower risk.


2018 ◽  
Vol 36 (05) ◽  
pp. 517-521 ◽  
Author(s):  
Whitney Bender ◽  
Adi Hirshberg ◽  
Lisa Levine

Objective To examine the change in body mass index (BMI) categories between pregnancies and its effect on adverse pregnancy outcomes. Study Design We performed a retrospective cohort study of women with two consecutive deliveries from 2005 to 2010. Analysis was limited to women with BMI recorded at <24 weeks for both pregnancies. Standard BMI categories were used. Adverse pregnancy outcomes included preterm birth at <37 weeks, intrauterine growth restriction (IUGR), pregnancy-related hypertension, and gestational diabetes mellitus (GDM). Women with increased BMI category between pregnancies were compared with those who remained in the same BMI category. Results In total, 537 women were included, of whom 125 (23%) increased BMI category. There was no association between increase in BMI category and risk of preterm birth, IUGR, or pregnancy-related hypertension. Women who increased BMI category had an increased odds of GDM compared with women who remained in the same BMI category (6.4 vs. 2.2%; p = 0.018). The increased risk remained after controlling for age, history of GDM, and starting BMI (adjusted odds ratio: 8.2; 95% confidence interval: 2.1–32.7; p = 0.003). Conclusion Almost one-quarter of women increased BMI categories between pregnancies. This modifiable risk factor has a significant impact on the risk of GDM.


Author(s):  
Shaina Chamotra ◽  
Kushla Pathania ◽  
S. K. Verma ◽  
Ankit Chaudhary

Background: Hypertensive disorders of pregnancy are a major cause of adverse pregnancy outcomes. Though the etiology of spectrum of vascular disorders of pregnancy is still not understood completely, yet abnormally elevated homocysteine level has been implicated in the causal pathway and pathogenesis. Hyperhomocysteinemia has been significantly associated with increased risk of poor maternal and foetal outcomes in terms of PIH, abruption, IUGR, recurrent pregnancy loss, intrauterine death and prematurity.Methods: The present prospective study was conducted among 180 pregnant women (57 exposed and 123 non exposed) in Kamla Nehru State Hospital for Mother and Child, IGMC Shimla, Himachal Pradesh with an objective of determining association of abnormally elevated homocysteine level in pregnancy and adverse pregnancy outcomes. Socio-demographic, clinical, biochemical including homocysteine level, laboratory, ultrasonographic parameters and foeto-maternal outcomes of pregnancy of all the participants were documented.Results: The mean homocysteine level of exposed group (23.26±10.77 µmol/L) was significantly higher than the unexposed group (8.99±2.47 µmol/L). Among hyperhomocysteinemic subjects, 10.5% had abruption, 15.8% had PRES and 8.7% PPH which was significantly higher than normal subjects. Similarly, patients with homocysteinemia had significantly higher proportion (21.3%) of poor Apgar score, more (41.9%) NICU admissions and higher frequency (4.7%) of meconium aspiration syndrome.Conclusions: The present study generates necessary evidence for associating abnormally elevated homocysteine levels with pregnancy related hypertensive ailments and adverse pregnancy outcomes. It further demands the need of robustly designed studies and trials to further explore the phenomenon. Moreover, it emphasizes on a simple and timely intervention like estimating the much-neglected homocysteine levels during pregnancy which can definitely contribute in predicting and preventing adverse perinatal outcomes.


2004 ◽  
Vol 2 (4) ◽  
pp. 233-247 ◽  
Author(s):  
Gabriella Aggazzotti ◽  
Elena Righi ◽  
Guglielmina Fantuzzi ◽  
Barbara Biasotti ◽  
Gianbattista Ravera ◽  
...  

Chlorination by-products (CBPs) in drinking water have been associated with an increased risk of adverse pregnancy outcomes, including small for gestational age at term (term-SGA) and preterm delivery. Epidemiological evidence is weakened by a generally inaccurate exposure assessment, often at an ecological level. A case control study with incident cases was performed in nine Italian towns between October 1999 and September 2000. A total of 1,194 subjects were enrolled: 343 preterm births (26th–37th not completed week of pregnancy), 239 term-SGA (from 37th completed week, and weight less than the lowest 10th percentile) and 612 controls. Exposure was assessed both by applying a questionnaire on mothers' personal habits during pregnancy and by water sampling directly at mothers' homes. Levels of trihalomethanes (THMs) were low (median: 1.10 µg l−1), while chlorite and chlorate concentrations were relatively high (median: 216.5 µg l−1 for chlorites and 76.5 µg l−1 for chlorates). Preterm birth showed no association with CBPs, while term-SGA, when chlorite levels ≥200 µg l−1 combined with low and high levels of inhalation exposure are considered, suggested a dose-response relationship (adjusted-Odds Ratios (ORs): 1.52, 95%CI: 0.91–2.54 and 1.70, 95%CI: 0.97–3.0, respectively). A weak association with high exposure levels of either THMs (≥30 µg l−1), or chlorite or chlorate (≥200 µg l−1) was also found (adjusted-OR: 1.38, 95%CI: 0.92–2.07). Chlorine dioxide treatment is widespread in Italy; therefore, chlorite levels should be regularly and carefully monitored and their potential effects on pregnancy further evaluated and better understood.


2006 ◽  
Vol 107 (Supplement) ◽  
pp. 72S
Author(s):  
Monique V. Chireau ◽  
Mimi Biswas ◽  
Emily Honeycutt ◽  
Haywood Brown ◽  
L Kristin Newby ◽  
...  

2019 ◽  
Vol 17 (6) ◽  
pp. 884-895 ◽  
Author(s):  
Funanani Mashau ◽  
Esper Jacobeth Ncube ◽  
Kuku Voyi

Abstract The current study aimed to determine the association between trichloroacetic acid (TCAA) levels and adverse pregnancy outcomes among third-trimester pregnant women who were exposed to chlorinated drinking water. A total of 205 pregnant women who participated in the disinfection by-products exposure and adverse pregnancy outcome study in South Africa were randomly asked to participate in this study by providing their morning urine sample voids. Samples were analysed for urinary creatinine and TCAA. Furthermore, participants gave individual data using a structured questionnaire. The mean (median) concentration of creatinine-adjusted urinary TCAA was 2.34 (1.95) μg/g creatinine. Elevated levels of creatinine-adjusted TCAA concentrations showed an increased risk of premature birth, small for gestational age (SGA) and low birth weight. There was no significant statistical correlation observed between creatinine-adjusted TCAA concentrations and the total volume of cold water ingested among the study population. No statistically significant association was observed between creatinine-adjusted urinary TCAA and premature birth, SGA and low birth weight newborns among the study subjects. However, the urinary TCAA concentrations identified in this study suggest potential health risks towards women and foetus. Therefore, further studies are warranted to prevent further adverse pregnancy outcomes.


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