Projects per year
Abstract
Background: Temperature variability (TV) is associated with increased mortality risk. However, it is still unknown whether intra-day or inter-day TV has different effects. Objectives: We aimed to assess the association of intra-day TV and inter-day TV with all-cause, cardiovascular, and respiratory mortality. Methods: We collected data on total, cardiovascular, and respiratory mortality and meteorology from 758 locations in 47 countries or regions from 1972 to 2020. We defined inter-day TV as the standard deviation (SD) of daily mean temperatures across the lag interval, and intra-day TV as the average SD of minimum and maximum temperatures on each day. In the first stage, inter-day and intra-day TVs were modelled simultaneously in the quasi-Poisson time-series model for each location. In the second stage, a multi-level analysis was used to pool the location-specific estimates. Results: Overall, the mortality risk due to each interquartile range [IQR] increase was higher for intra-day TV than for inter-day TV. The risk increased by 0.59% (95% confidence interval [CI]: 0.53, 0.65) for all-cause mortality, 0.64% (95% CI: 0.56, 0.73) for cardiovascular mortality, and 0.65% (95% CI: 0.49, 0.80) for respiratory mortality per IQR increase in intra-day TV0–7 (0.9 °C). An IQR increase in inter-day TV0–7 (1.6 °C) was associated with 0.22% (95% CI: 0.18, 0.26) increase in all-cause mortality, 0.44% (95% CI: 0.37, 0.50) increase in cardiovascular mortality, and 0.31% (95% CI: 0.21, 0.41) increase in respiratory mortality. The proportion of all-cause deaths attributable to intra-day TV0–7 and inter-day TV0–7 was 1.45% and 0.35%, respectively. The mortality risks varied by lag interval, climate area, season, and climate type. Conclusions: Our results indicated that intra-day TV may explain the main part of the mortality risk related to TV and suggested that comprehensive evaluations should be proposed in more countries to help protect human health.
Original language | English |
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Article number | 108712 |
Number of pages | 13 |
Journal | Environment International |
Volume | 187 |
DOIs | |
Publication status | Published - May 2024 |
Keywords
- Inter-day
- Intra-day
- Mortality
- Temperature variability
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New Knowledge and Research Capacity for Health Impacts of Global Environmental Change with Big Data, Novel Approach and New Technology
Guo, Y. (Primary Chief Investigator (PCI))
1/01/22 → 31/12/26
Project: Research
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Multi-Country Study on Health Effects of Bushfire Air Pollution
Guo, Y. (Primary Chief Investigator (PCI)), Abramson, M. (Chief Investigator (CI)), Marks, G. B. (Partner Investigator (PI)), Johnston, F. (Chief Investigator (CI)), Heyworth, J. S. (Chief Investigator (CI)), Morgan, G. G. (Chief Investigator (CI)), Knibbs, L. (Chief Investigator (CI)), Samet, J. (Partner Investigator (PI)), Bell, M. (Partner Investigator (PI)), Woodward, A. (Partner Investigator (PI)), Jalaludin, B. B. (Partner Investigator (PI)), Saldiva, P. H. N. (Partner Investigator (PI)), Hales, S. (Partner Investigator (PI)), Henderson, S. B. (Partner Investigator (PI)) & Lavigne, E. (Partner Investigator (PI))
1/04/22 → 31/03/25
Project: Research
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Climate Change and Human Health in Asia: Current Impacts, Future Risks, and Health Benefits of Mitigation Policies
Guo, Y. (Primary Chief Investigator (PCI)), Capon, T. (Chief Investigator (CI)), Bi, P. (Chief Investigator (CI)), Jalaludin, B. B. (Chief Investigator (CI)), Zhang, Y. (Chief Investigator (CI)), Green, D. (Chief Investigator (CI)), Hu, W. (Chief Investigator (CI)), Arblaster, J. (Chief Investigator (CI)), Li, S. (Chief Investigator (CI)), Phung, D. (Chief Investigator (CI)), Huxley, R. R. (Associate Investigator (AI)), Li, T. (Associate Investigator (AI)), Kan, H. (Associate Investigator (AI)), Kim, H. H. (Associate Investigator (AI)), Hales, S. (Associate Investigator (AI)), Peng, W. (Associate Investigator (AI)), Binti Mahjom, M. (Associate Investigator (AI)) & Phuleria, H. (Associate Investigator (AI))
1/01/21 → 31/12/24
Project: Research