Abstract
This study used the time series data of Ganzhou city to explore the individual and interaction effects of temperature and humidity on COPD death, and identify vulnerable subgroups of the population. We collected daily COPD mortality and meteorological data in Ganzhou from 2016 to 2019. The nonlinear distribution lag model was used to examine the associations and interaction between daily mean temperature and humidity and COPD mortality. For the total population, male and 65 years old or above, the relative risk (RR) for COPD mortality could be significant at extremely low temperature (3.3 ℃), reaching 1.799 (95% confidence interval [CI]: 1.216, 2.662), 1.894 (95% CI: 1.164, 3.084) and 1.779 (95% CI:1.185, 2.670). Also, at extremely low humidity (47.8%), the risk reached 1.888 (95% CI: 1.217, 2.930), 1.837 (95% CI: 1.066, 3.165) and 2.166 (95% CI: 1.375, 3.414). The cumulative COPD death risk for females was 3.524 (95% CI: 1.340, 9.267) at high temperature (30.7 ℃), 1.953(95% CI: 1.036, 3.683) at low humidity (47.8%) and 1.726 (95% CI: 1.048, 2.845) at high humidity (96.7%). For the total COPD deaths and subgroups, the interaction effects between daily temperature and humidity were not significant (p > 0.05). Both extremely low temperature and low humidity increased the risk of COPD death in Ganzhou city, especially for males and people over 65 years old. Females were more sensitive to extremely high temperature and humidity. Patients with COPD should pay attention to self-protection under extreme temperature and humidity weather conditions.
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Datasets generated and/or analyzed in the course of the current study are available from the corresponding author upon reasonable request.
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The study was supported by the National Natural Science Foundation of China (42165012) and Ph.D. Start-up Fund of Gannan Medical University (QD202013).
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Chenyang Shi performed software code, performed formal analysis, and wrote the original draft of the manuscript. **yun Zhu, Qingfeng Wu and Yanhong Liu assisted in data collection, gave guidance and constructive suggestions. Yanbin Hao contributed to conceptualization, wrote, reviewed, edited the manuscript, and was responsible for fund acquisition.
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Shi, C., Zhu, J., Wu, Q. et al. Effects of ambient temperature and humidity on COPD mortality in Ganzhou city, China. Int J Biometeorol (2024). https://doi.org/10.1007/s00484-024-02705-6
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DOI: https://doi.org/10.1007/s00484-024-02705-6