Evidence map›Paper›PMID 25748025›Full record

ArticleEnvironmental health perspectives2015

Ambient Heat and Sudden Infant Death: A Case-Crossover Study Spanning 30 Years in Montreal, Canada.

Nathalie Auger, William D Fraser, Audrey Smargiassi, Tom Kosatsky

Open access · diamondAbstract read
In one paragraph

Article in Environmental health perspectives, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 3 pooled it
4.1field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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

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.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 3 syntheses or guidelines pooled it, 75 citations in OpenAlex.

  1. Pooled it
  2. The Effect of High and Low Ambient Temperature on Infant Health: A Systematic Review.International journal of environmental research and public health · 2022
    Pooled it
  3. Pooled it
  4. Review
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  6. Article
  7. Review
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  9. Article
  10. The effect of global warming on mortality.Early human development · 2021
    Article
  11. Article
  12. Review
  13. Ambient Air Pollution and Sudden Infant Death Syndrome in Korea: A Time-Stratified Case-Crossover Study.International journal of environmental research and public health · 2019
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  15. Article
  16. Establishing Heat Alert Thresholds for the Varied Climatic Regions of British Columbia, Canada.International journal of environmental research and public health · 2018
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  18. Observational
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 1 country.

Nathalie AugerInstitut national de santé publique du Québec, Montreal, Quebec, Canada.
William D Fraser
Audrey Smargiassi
Tom Kosatsky
Institut National de Santé Publique du Québec · CABC Centre for Disease Control · CAUniversité de Sherbrooke · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundClimate change may lead to more severe and extreme heat waves in the future, but its potential impact on sudden infant death-a leading cause of infant mortality-is unclear.

objectivesWe sought to determine whether risk of sudden infant death syndrome (SIDS) is elevated during hot weather.

methodsWe undertook a case-crossover analysis of all sudden infant deaths during warm periods in metropolitan Montreal, Quebec, Canada, from 1981 through 2010. Our analysis included a total of 196 certified cases of SIDS, including 89 deaths at 1-2 months of age, and 94 at 3-12 months. We estimated associations between maximum outdoor temperatures and SIDS by comparing outdoor temperatures on the day of or day before a SIDS event with temperatures on control days during the same month, using cubic splines to model temperature and adjusting for relative humidity.

resultsMaximum daily temperatures of ≥ 29°C on the same day were associated with 2.78 times greater odds of sudden infant death relative to 20°C (95% CI: 1.64, 4.70). The likelihood of sudden death increased steadily with higher temperature. Associations were stronger for infants 3-12 months of age than for infants 1-2 months of age, with odds ratios of 3.90 (95% CI: 1.87, 8.13) and 1.73 (95% CI: 0.80, 3.73), respectively, for 29°C compared with 20°C on the day of the event.

conclusionsHigh ambient temperature may be a novel risk factor for SIDS, especially at ≥ 3 months of age. Climate change and the higher temperatures that result may account for a potentially greater proportion of sudden infant deaths in the future.

Indexed as

Age FactorsCitiesCross-Over StudiesFemaleHot TemperatureHumansInfantInfant MortalityLogistic ModelsMaleOdds RatioQuebecRisk FactorsSudden Infant Death

Identifiers

PMID25748025
PMCPMC4492261
OpenAlexW2055704757

What OpenQuestion holds

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LicenceCC0
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Registered trials

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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.