Variations in very preterm birth rates in 30 high-income countries: are valid international comparisons possible using routine data?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023698%3A_____%2F17%3AN0000024" target="_blank" >RIV/00023698:_____/17:N0000024 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1111/1471-0528.14273" target="_blank" >http://dx.doi.org/10.1111/1471-0528.14273</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/1471-0528.14273" target="_blank" >10.1111/1471-0528.14273</a>
Alternative languages
Result language
angličtina
Original language name
Variations in very preterm birth rates in 30 high-income countries: are valid international comparisons possible using routine data?
Original language description
Concerns about differences in registration practices across countries have limited the use of routine data for international very preterm birth (VPT) rate comparisons. DESIGN: Population-based study. SETTING: Twenty-seven European countries, the United States, Canada and Japan in 2010. POPULATION: A total of 9 376 252 singleton births. METHOD: We requested aggregated gestational age data on live births, stillbirths and terminations of pregnancy (TOP) before 32 weeks of gestation, and information on registration practices for these births. We compared VPT rates and assessed the impact of births at 22-23 weeks of gestation, and different criteria for inclusion of stillbirths and TOP on country rates and rankings. MAIN OUTCOME MEASURES: Singleton very preterm birth rate, defined as singleton stillbirths and live births before 32 completed weeks of gestation per 1000 total births, excluding TOP if identifiable in the data source. RESULTS: Rates varied from 5.7 to 15.7 per 1000 total births and 4.0 to 11.9 per 1000 live births. Country registration practices were related to percentage of births at 22-23 weeks of gestation (between 1% and 23% of very preterm births) and stillbirths (between 6% and 40% of very preterm births). After excluding births at 22-23 weeks, rate variations remained high and with a few exceptions, country rankings were unchanged. CONCLUSIONS: International comparisons of very preterm birth rates using routine data should exclude births at 22-23 weeks of gestation and terminations of pregnancy. The persistent large rate variations after these exclusions warrant continued surveillance of VPT rates at 24 weeks and over in high-income countries.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
30214 - Obstetrics and gynaecology
Result continuities
Project
—
Continuities
N - Vyzkumna aktivita podporovana z neverejnych zdroju
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
BJOG: An International Journal of Obstetrics & Gynaecology
ISSN
1470-0328
e-ISSN
1470-0328
Volume of the periodical
124
Issue of the periodical within the volume
5
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
785-794
UT code for WoS article
000397387500016
EID of the result in the Scopus database
2-s2.0-84987936677