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Temperature as a risk factor of emergency department visits for acute kidney injury: a case-crossover study in Seoul, South Korea
Cited 10 time in
Web of Science
Cited 10 time in Scopus
- Authors
- Issue Date
- 2019-06-14
- Publisher
- BioMed Central
- Citation
- Environmental Health. 18(1):55
- Keywords
- Ambient temperature ; Acute kidney injury ; Emergency department visit ; Case-crossover design ; Exposure-response curve
- Abstract
- Background
Previous studies show that escalations in ambient temperature are among the risk factors for acute kidney injury (AKI). However, it has not been adequately studied in our location, Seoul, South Korea. In this study, we aimed to examine the association between ambient temperatures and AKI morbidity using emergency department (ED) visit data.
Methods
We obtained data on ED visits from the National Emergency Medical Center for 21,656 reported cases of AKI from 2010 to 2014. Time-stratified case-crossover design analysis based on conditional logistic regression was used to analyze short-term effects of ambient temperature on AKI after controlling for relevant covariates. The shape of the exposure–response curve, effect modification by individual demographic characteristics, season, and comorbidities, as well as lag effects, were investigated.
Results
The odds ratio (OR) per 1 °C increase at lag 0 was 1.0087 (95% confidence interval [CI]: 1.0041–1.0134). Risks were higher during the warm season (OR = 1.0149; 95% CI: 1.0065–1.0234) than during the cool season (OR = 1.0059; 95% CI: 1.0003–1.0116) and even higher above 22.3 °C (OR = 1.0235; 95% CI: 1.0230–1.0239).
Conclusions
This study provides evidence that ED visits for AKI were associated with ambient temperature. Early detection and treatment of patients at risk is important in both clinical and economic concerns related to AKI.
- ISSN
- 1476-069X
- Language
- English
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