Evidence map›Paper›PMID 24273236›Full record

ArticleEnvironmental health perspectives2014

Heat waves and health outcomes in Alabama (USA): the importance of heat wave definition.

Shia T Kent, Leslie A McClure, Benjamin F Zaitchik, Tiffany T Smith, Julia M Gohlke

Open access · diamondAbstract read
In one paragraph

Article in Environmental health perspectives, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 80 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
80citing papers in PubMed, 5 pooled it
6.0field-weighted citation impact, top 4% 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

80 citing papers in PubMed, 5 syntheses or guidelines pooled it, 191 citations in OpenAlex.

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  4. Knowledge Gaps and Research Priorities on the Health Effects of Heatwaves: A Systematic Review of Reviews.International journal of environmental research and public health · 2022
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  5. Heat Exposure and Maternal Health in the Face of Climate Change.International journal of environmental research and public health · 2017
    Pooled it
  6. Temperature and heat-load exposure effects on preterm births: Insights from a population-based study using distributed lag non-linear models.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026
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20 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

Shia T KentDepartment of Environmental Health Sciences, and.
Leslie A McClure
Benjamin F Zaitchik
Tiffany T Smith
Julia M Gohlke
Center for Environmental Health · USJohns Hopkins University · USUniversity of Alabama at Birmingham · US

Funding

Extreme Heat Events- Evolving risk patterns in urban and rural communitiesR21ES020205 · NIEHS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI GOHLKE, JULIA M · 2011 to 2012
$421k
NIEHS NIH HHS R21 ES020205NIEHS NIH HHS R21ES020205
6 · The paper itself

Abstract

backgroundA deeper understanding of how heat wave definition affects the relationship between heat exposure and health, especially as a function of rurality, will be useful in developing effective heat wave warning systems.

objectiveWe compared the relationships between different heat wave index (HI) definitions and preterm birth (PTB) and nonaccidental death (NAD) across urban and rural areas.

methodsWe used a time-stratified case-crossover design to estimate associations of PTB and NAD with heat wave days (defined using 15 HIs) relative to non-heat wave control days in Alabama, USA (1990-2010). ZIP code-level HIs were derived using data from the North American Land Data Assimilation System. Associations with heat wave days defined using different HIs were compared by bootstrapping. We also examined interactions with rurality.

resultsAssociations varied depending on the HI used to define heat wave days. Heat waves defined as having at least 2 consecutive days with mean daily temperatures above the 98th percentile were associated with 32.4% (95% CI: 3.7, 69.1%) higher PTB, and heat waves defined as at least 2 consecutive days with mean daily temperatures above the 90th percentile were associated with 3.7% (95% CI: 1.1, 6.3%) higher NAD. Results suggest that significant positive associations were more common when relative-compared with absolute-HIs were used to define exposure. Both positive and negative associations were found in each rurality stratum. However, all stratum-specific significant associations were positive, and NAD associations with heat waves were consistently positive in urban strata but not in middle or rural strata.

conclusionsBased on our findings, we conclude that a relative mean-temperature-only heat wave definition may be the most effective metric for heat wave warning systems in Alabama.

Indexed as

AlabamaCross-Over StudiesHumansInfrared RaysMortalityPremature BirthRural HealthSemanticsUrban Population

Identifiers

PMID24273236
PMCPMC3914868
OpenAlexW2046193892

What OpenQuestion holds

Textmetadata
LicenceCC0
Read underepoch 390

Registered trials

None linked

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.