Evidence map›Paper›PMID 41426709›Full record

ArticleFrontiers in public health2025

Ambient temperature and ozone exposure increases the risk of preterm birth in Northeast China: a time series analysis.

Wanyan Geng, Jing Yuan, Jiancheng Li, Xinyue Wu, Hongxin Xu, Yuhui Sun, Haiyu Zhang, Tao Song, Yan Zhao

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Article in Frontiers in public health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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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

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Wanyan Geng *Department of Nutrition and Food Hygiene, The National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China.
Jing Yuan *Department of Obstetrics, The First Affiliated Hospital of Harbin Medical University, Harbin, China.
Jiancheng LiDepartment of Nutrition and Food Hygiene, The National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China.
Xinyue WuDepartment of Nutrition and Food Hygiene, The National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China.
Hongxin XuDepartment of Cardiology, The First Affiliated Hospital of Harbin Medical University, Harbin, China.
Yuhui SunDepartment of Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin, China.
Haiyu ZhangDepartment of Cardiology, The First Affiliated Hospital of Harbin Medical University, Harbin, China.
Tao SongDepartment of Cardiology, The First Affiliated Hospital of Harbin Medical University, Harbin, China.
Yan ZhaoDepartment of Nutrition and Food Hygiene, The National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Prenatal exposure to meteorological factors and air pollutants may increase preterm birth (PTB) risk, but existing research is limited and inconsistent. Heilongjiang Province is located in Northeast China and is the northernmost and highest latitude province. Yet the association between meteorological factors, air pollutants, and PTB in this region remains unclear. Methods: PTB cases were collected between July 1, 2019, and June 30, 2023. Meteorological factors were collected for the same period. The exposure-response relationships and lagged effects of meteorological factors and air pollutants on PTB were analyzed using the Distributed Lag Non-linear Model (DLNM), with a maximum lag of 30 days. Results: A total of 3,267 PTB cases were included. Low and extremely low ambient temperatures were associated with an increased risk of PTB at lag day 20 (RR = 1.09, 95% CI: 1.01-1.18 and RR = 1.09, 95% CI: 1.02-1.16, respectively). In contrast, extremely high ambient temperatures were associated with an increased risk of PTB at lag day 0 (RR = 1.12, 95% CI: 1.00-1.25). An extremely high Humidex was associated with an increased risk of PTB at lag day 0 (RR = 1.15, 95% CI: 1.01-1.30). For ozone, each IQR increase (27.8 μg/m Conclusion: This study indicated that extreme temperatures, as well as an extremely high Humidex and increased ozone concentrations, may be associated with an increased risk of PTB, with significant lag effects.

Indexed as

Air PollutantsAir PollutionEnvironmental ExposureOzonePremature BirthTemperatureAdultChinaFemaleHumansInfant, NewbornPregnancyRisk FactorsAir PollutantsOzoneambient temperaturedistributed lag non-linear modelhumidexozonepreterm birth

Identifiers

PMID41426709
PMCPMC12714875

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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.