ArticleEnvironmental epidemiology (Philadelphia, Pa.)2021
Association between maximum temperature and PM
Article in Environmental epidemiology (Philadelphia, Pa.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 2 of them syntheses that pooled 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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
7 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- A systematic review and meta-analysis on heat thresholds for maternal health and birth outcomes.Nature communications · 2026Pooled it
- A systematic review and meta-analysis of heat exposure impacts on maternal, fetal and neonatal health.Nature medicine · 2025Pooled it
- The Impact of Ambient Heat on Perinatal and Neonatal Health in the Context of Climate Change: A Scoping Review.Current environmental health reports · 2026Article
- Ambient PMCurrent environmental health reports · 2026Review
- Environmental pollution and human fertility: investigating the relationship between PM2.5 exposure and assisted reproductive technology outcomes.BMC public health · 2025Article
- Iron Trace Elements Concentration in PMBiomedicines · 2024Article
- Association Between Particulate Matter Exposure and Preterm Birth in Women With Abnormal Preconception Thyrotropin Levels: Large Cohort Study.JMIR public health and surveillance · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundWe have previously documented an inverse relationship between PM
methodsWe studied 123,034 singleton births in three public hospitals of Lima with temperature and PM
resultsExposure to maximum temperature in the last trimester was inversely associated with both birth weight [β: -23.7; 95% confidence interval [CI]: -28.0, -19.5] and z-score weight-for-gestational-age (β: -0.024; 95% CI: -0.029, -0.020) with an interquartile range of 5.32 °C. There was also an increased risk of preterm birth with higher temperature (interquartile range) in the first trimester (hazard ratio: 1.04; 95% CI: 1.001, 1.070). The effect of temperature on birthweight was primarily seen at higher PM
conclusionsExposition to maximum temperature was associated with lower birth weight and z-score weight-for-gestational-age and higher risk of preterm birth, in accordance with much of the literature. The effects on birth weight were seen only in the third trimester.
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Registered trials
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