High-temperature indices associated with mortality and outpatient visits: characterizing the association with elevated temperature.

The Science of the Total Environment
Yu-Kai LinYu-Chun Wang

Abstract

This study aimed to identify optimal high-temperature indices to predict risks of all-cause mortality and outpatient visits for subtropical islanders in warm seasons (May to October). Eight high-temperature indices, including three single measurements (average, maximum and minimum temperature) and five composite indices (heat index, humidex, temperature humidity index, apparent temperature and wet-bulb globe temperature), and their standardized Z scores, were used in distributed lag non-linear models. Cumulative 8-day (lag zero to seven days) relative risks (RRs) and 95% confidence intervals were estimated, 1 and 2 standardized deviations above the medium (i.e., at 84.1th and 97.7th percentile, respectively), by comparing with Z scores for the lowest risks of mortality and outpatient visits as references. Analyses were performed for Taipei in north, Central Taiwan and Southern Taiwan. Results showed that standardized Z-values of high-temperature indices associated with the lowest health risk were approximately 0 in Taipei and Central Taiwan, and -1 in Southern Taiwan. As the apparent temperature was at Z=2, the cumulative 8-day mortality risk increased significantly, by 23% in Taipei and 28% in Southern Taiwan, but not in Centr...Continue Reading

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Citations

Nov 26, 2015·Environmental Research·Robert E DavisKyle B Enfield
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Jun 22, 2017·International Journal of Environmental Health Research·Ching-Hui TsengShou-Jen Lan
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Jul 31, 2021·BMC Public Health·Mahamat Abdelkerim IssaTaha B M J Ouarda
Aug 22, 2021·Environmental Geochemistry and Health·Maryam DastoorpoorRahim Sharafkhani

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Software Mentioned

LOESS
Statistical Environment R
SAS

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