403: Population-based estimation of the preterm birth rate in malawi: making every birth count

2016 ◽  
Vol 214 (1) ◽  
pp. S221-S222
Author(s):  
Kathleen M. Antony ◽  
R. Alan Harris ◽  
Judy Levison ◽  
Bertha Banda ◽  
Grace Chiudzu ◽  
...  
Keyword(s):  
Preterm Birth ◽  
Birth Rate ◽  
Population Based ◽  
Preterm Birth Rate

522: Population-based estimation of the preterm birth rate in Malawi: making every birth count

2014 ◽  
Vol 210 (1) ◽  
pp. S257-S258 ◽  
Author(s):  
Kjersti Aagaard ◽  
Judy Levison ◽  
Bertha Banda ◽  
Andrew Chigayo ◽  
Owen Chilaga ◽  
...  
Keyword(s):  
Preterm Birth ◽  
Birth Rate ◽  
Population Based ◽  
Preterm Birth Rate

scholarly journals Population-Based Estimation of the Preterm Birth Rate in Lilongwe, Malawi: Making Every Birth Count

2020 ◽  
Vol 10 (01) ◽  
pp. e78-e86
Author(s):  
Kathleen M. Antony ◽  
Peter N. Kazembe ◽  
Ryan M. Pace ◽  
Judy Levison ◽  
Henry Phiri ◽  
...  
Keyword(s):  
Risk Factors ◽  
Preterm Birth ◽  
Birth Rate ◽  
Health Workers ◽  
Population Based ◽  
High Rate ◽  
Comorbid Conditions ◽  
Neonatal Deaths ◽  
Preterm Birth Rate ◽  
Early Neonatal Deaths

Abstract Objective The objective of this study was to perform a population-based estimation of the preterm birth (PTB) rate in regions surrounding Lilongwe, Malawi. Study Design We partnered with obstetrician specialists, community health workers, local midwives, and clinicians in a 50 km region surrounding Lilongwe, Malawi, to perform a population-based estimation of the PTB rate during the study period from December 1, 2012 to May 19, 2015. Results Of the 14,792 births captured, 19.3% of births were preterm, including preterm early neonatal deaths. Additional PTB risk factors were similarly prevalent including domestic violence, HIV, malaria, anemia, and malnutrition. Conclusion When performing a population-based estimation of the rate of PTB, including women without antenatal care and women delivering at home, the 19.3% rate of PTB is among the highest recorded globally. This is accompanied by a high rate of risk factors and comorbid conditions.

The Late Preterm Birth Rate and Its Association with Comorbidities in a Population-Based Study

2011 ◽  
Vol 28 (09) ◽  
pp. 703-708 ◽  
Author(s):  
Margaret Carter ◽  
Sharon Fowler ◽  
Alan Holden ◽  
Elly Xenakis ◽  
Donald Dudley
Keyword(s):  
Preterm Birth ◽  
Birth Rate ◽  
Population Based ◽  
Late Preterm ◽  
Population Based Study ◽  
Late Preterm Birth ◽  
Preterm Birth Rate

Changes in incidence of iatrogenic and spontaneous preterm births over time: a population-based study

2016 ◽  
Vol 44 (5) ◽  
Author(s):  
Miha Lucovnik ◽  
Andreja Trojner Bregar ◽  
Lili Steblovnik ◽  
Ivan Verdenik ◽  
Ksenija Gersak ◽  
...  
Keyword(s):  
Preterm Birth ◽  
Birth Rate ◽  
Preterm Births ◽  
Population Based ◽  
Spontaneous Preterm Birth ◽  
Birth Rates ◽  
Population Based Study ◽  
Preterm Birth Rate ◽  
Iatrogenic Preterm Delivery ◽  
Over Time

AbstractTo examine the proportion of iatrogenic births among all preterm births over a 26-year period.A registry-based survey of preterm deliveries between 1987 and 2012 analyzed by the onset of labor: spontaneous with intact membranes, preterm premature rupture of membranes (PPROM) or iatrogenic. Stratification into categories by gestation (22 weeks to 27 weeks and 6 days, 28 weeks to 31 weeks and 6 days, 32 weeks to 33 weeks and 6 days, 34 weeks to 36 weeks and 6 days) was performed. Preterm birth rates were analyzed using the Mantel-Haenszel linear-by-linear associationOverall preterm birth rate was 5.9% (31328 deliveries) including 2358 (0.4%) before 28 completed weeks, 3388 (0.6%) between 28 weeks and 31 weeks 6 days, 3970 (0.8%) between 32 weeks and 33 weeks and 6 days, and 21611 (4.1%) between 34 weeks and 36 weeks and 6 days There was an increase in overall preterm birth rate (P<0.001). The rate of iatrogenic preterm births and PPROM increased over time (P<0.001 and P<0.014, respectively). Rates of spontaneous preterm birth decreased (P<0.001). After accounting for potential confounders, year of birth remained an independent risk factor for iatrogenic preterm delivery in all four gestational age categories (P<0.001).The incidence of iatrogenic preterm birth is increasing with a concomitant decrease in the incidence of spontaneous preterm birth. Attempts to analyze, interpret and decrease preterm birth rates should consider spontaneous and iatrogenic preterm births separately.

scholarly journals Validity of pre and post-term birth rates based on the date of last menstrual period compared to early obstetric ultrasonography

2015 ◽  
Vol 31 (4) ◽  
pp. 885-890 ◽  
Author(s):  
Maria Nilza Lima Medeiros ◽  
Nádia Carenina Nunes Cavalcante ◽  
Fabrício José Alencar Mesquita ◽  
Rosângela Lucena Fernandes Batista ◽  
Vanda Maria Ferreira Simões ◽  
...  
Keyword(s):  
Preterm Birth ◽  
Positive Predictive Value ◽  
Predictive Value ◽  
Birth Rate ◽  
Menstrual Period ◽  
Last Menstrual Period ◽  
Birth Rates ◽  
Term Birth ◽  
Preterm Birth Rate ◽  
Obstetric Ultrasonography

The aim of this study was to assess the validity of the last menstrual period (LMP) estimate in determining pre and post-term birth rates, in a prenatal cohort from two Brazilian cities, São Luís and Ribeirão Preto. Pregnant women with a single fetus and less than 20 weeks' gestation by obstetric ultrasonography who received prenatal care in 2010 and 2011 were included. The LMP was obtained on two occasions (at 22-25 weeks gestation and after birth). The sensitivity of LMP obtained prenatally to estimate the preterm birth rate was 65.6% in São Luís and 78.7% in Ribeirão Preto and the positive predictive value was 57.3% in São Luís and 73.3% in Ribeirão Preto. LMP errors in identifying preterm birth were lower in the more developed city, Ribeirão Preto. The sensitivity and positive predictive value of LMP for the estimate of the post-term birth rate was very low and tended to overestimate it. LMP can be used with some errors to identify the preterm birth rate when obstetric ultrasonography is not available, but is not suitable for predicting post-term birth.

scholarly journals Are COVID-19 mitigation measures reducing preterm birth rate in China?

2021 ◽  
Vol 6 (8) ◽  
pp. e006359
Author(s):  
Zheng Bian ◽  
Xiaoxian Qu ◽  
Hao Ying ◽  
Xiaohua Liu
Keyword(s):  
Preterm Birth ◽  
Birth Rate ◽  
Time Window ◽  
Time Windows ◽  
Mitigation Measures ◽  
Late Preterm Birth ◽  
Child Morbidity ◽  
Preterm Birth Rate ◽  
Underlying Mechanisms ◽  
The Impact

ObjectivePreterm birth is the leading cause of child morbidity and mortality globally. We aimed to determine the impact of the COVID-19 mitigation measures implemented in China on 23 January 2020 on the incidence of preterm birth in our institution.DesignLogistic regression analysis was used to investigate the association between the national COVID-19 mitigation measures implemented in China and the incidence of preterm birth.SettingShanghai First Maternity and Infant Hospital, Shanghai China.ParticipantsAll singleton deliveries abstracted from electronic medical record between 1 January 2014 to 31 December 2020.Main outcome measuresPreterm birth rate.ResultsData on 164 107 singleton deliveries were available. COVID-19 mitigation measures were consistently associated with significant reductions in preterm birth in the 2-month, 3-month, 4-month, 5-month time windows after implementation (+2 months, OR 0.80, 95% CI 0.69 to 0.94; +3 months, OR 0.83, 95% CI 0.73 to 0.94; +4 months, OR 0.82, 95% CI 0.73 to 0.92; +5 months, OR 0.84, 95% CI 0.76 to 0.93). These reductions in preterm birth were obvious across various degrees of prematurity, but were statistically significant only in moderate-to-late preterm birth (32 complete weeks to 36 weeks and 6 days) subgroup. The preterm birth difference disappeared gradually after various restrictions were removed (7th–12th month of 2020, OR 1.02, 95% CI 0.94 to 1.11). There was no difference in stillbirth rate across the study time window.ConclusionSubstantial decreases in preterm birth rates were observed following implementation of the national COVID-19 mitigation measures in China. Further study is warranted to explore the underlying mechanisms associated with this observation.

scholarly journals Incidence and trend of preterm birth in China, 1990–2016: a systematic review and meta-analysis

BMJ Open ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. e039303
Author(s):  
Shiwen Jing ◽  
Chang Chen ◽  
Yuexin Gan ◽  
Joshua Vogel ◽  
Jun Zhang
Keyword(s):  
Systematic Review ◽  
Preterm Birth ◽  
Birth Rate ◽  
Meta Analysis ◽  
Northwest China ◽  
Cochrane Library ◽  
Case Control Studies ◽  
Eligibility Criteria ◽  
Rate Of Increase ◽  
Preterm Birth Rate

ObjectivesTo update the WHO estimate of preterm birth rate in China in 1990–2016 and to further explore variations by geographic regions and years of occurrence.DesignSystematic review and meta-analysis.Data sourcesPubmed, Embase, Cochrane Library and Sinomed databases were searched from 1990 to 2018.Eligibility criteriaStudies were included if they provided preterm birth data with at least 500 total births. Reviews, case–control studies, intervention studies and studies with insufficient information or published before 1990 were excluded. We estimated pooled incidence of preterm birth by a random effects model, and preterm birth rate in different year, region and by livebirths or all births in subgroup analyses.ResultsOur search identified 3945 records. After the removal of duplicates and screening of titles and abstracts, we reviewed 254 studies in full text and excluded 182, leaving 72 new studies. They were combined with the 82 studies included in the WHO report (154 studies, 187 data sets in total for the meta-analysis), including 24 039 084 births from 1990 to 2016. The pooled incidence of preterm birth in China was 6.09% (95% CI 5.86% to 6.31%) but has been steadily increasing from 5.36% (95% CI 4.89% to 5.84%) in 1990–1994 to 7.04% (95% CI 6.09% to 7.99%) in 2015–2016. The annual rate of increase was about 1.05% (95% CI 0.85% to 1.21%). Northwest China appeared to have the highest preterm birth rate (7.3%, 95% CI 4.92% to 9.68% from 1990 to 2016).ConclusionsThe incidence of preterm birth in China has been rising gradually in the past three decades. It was 7% in 2016. Preterm birth rate varied by region with the West having the highest occurrence.

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