Evidence map›Paper›PMID 18511489›Full record

ArticleInternational journal of epidemiology2008

Vulnerability to heat-related mortality in Latin America: a case-crossover study in Sao Paulo, Brazil, Santiago, Chile and Mexico City, Mexico.

Michelle L Bell, Marie S O'Neill, Nalini Ranjit, Victor H Borja-Aburto, Luis A Cifuentes, Nelson C Gouveia

Abstract readComparative Study
In one paragraph

Article in International journal of epidemiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 116 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
116citing papers in PubMed, 3 pooled it
–field-weighted citation impact
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

116 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  4. Trial
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  8. Climate change: a critical time for respiratory health.Respiratory research & clinical practice · 2026
    Review
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  15. Excess mortality associated with extreme heat in Rio de Janeiro, Brazil, 2023.Revista panamericana de salud publica = Pan American journal of public health · 2025
    Article
  16. Article
  17. Article
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56 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

6 authors.

Michelle L BellEnvironmentalHealth, Yale University, New Haven, CT06511, USA. michelle.bell@yale.edu
Marie S O'Neill
Nalini Ranjit
Victor H Borja-Aburto
Luis A Cifuentes
Nelson C Gouveia

Funding

National Assessment of the Mortality and Morbidity Effects of Tropospheric OzoneR01ES015028 · NIEHS · YALE UNIVERSITY · PI BELL, MICHELLE L · 2006 to 2010
$477k
NIEHS NIH HHS 1 R01 ES015028NIEHS NIH HHS R01 ES015028
6 · The paper itself

Abstract

backgroundFactors affecting vulnerability to heat-related mortality are not well understood. Identifying susceptible populations is of particular importance given anticipated rising temperatures from climatic change.

methodsWe investigated heat-related mortality for three Latin American cities (Mexico City, Mexico; São Paulo, Brazil; Santiago, Chile) using a case-crossover approach for 754 291 deaths from 1998 to 2002. We considered lagged exposures, confounding by air pollution, cause of death and susceptibilities by educational attainment, age and sex.

resultsSame and previous day apparent temperature were most strongly associated with mortality risk. Effect estimates remained positive though lowered after adjustment for ozone or PM(10). Susceptibility increased with age in all cities. The increase in mortality risk for those >or=65 comparing the 95th and 75th percentiles of same-day apparent temperature was 2.69% (95% CI: -2.06 to 7.88%) for Santiago, 6.51% (95% CI: 3.57-9.52%) for São Paulo and 3.22% (95% CI: 0.93-5.57%) for Mexico City. Patterns of vulnerability by education and sex differed across communities. Effect estimates were higher for women than men in Mexico City, and higher for men elsewhere, although results by sex were not appreciably different for any city. In São Paulo, those with less education were more susceptible, whereas no distinct patterns by education were observed in the other cities.

conclusionsElevated temperatures are associated with mortality risk in these Latin American cities, with the strongest associations in São Paulo, the hottest city. The elderly are an important population for targeted prevention measures, but vulnerability by sex and education differed by city.

Indexed as

CitiesMortalityAdolescentAdultAgedAge FactorsAir PollutantsBrazilChildChild, PreschoolChileCross-Over StudiesEducational StatusFemaleFourier AnalysisHot TemperatureAir PollutantsOzoneParticulate Matter

Identifiers

PMID18511489
PMCPMC2734062

What OpenQuestion holds

Textmetadata
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.