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Potential role of ambient temperature as a trigger for intracerebral hemorrhage: a time-stratified case-crossover study in Tianjin, China

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Abstract

The adverse effects of ambient temperature on human health are receiving increasing attention, yet evidence of its impact on intracerebral hemorrhage (ICH) onset is limited. Here, the relationship between ambient temperature and ICH was evaluated. A time-stratified case-crossover analysis was performed based on 4051 ICH patients admitted to five stroke units in Tianjin between January 2014 and December 2020. Conditional logistic regression was applied to evaluate the associations between the daily mean temperature (Tm) or daily temperature range (DTR) and ICH onset. We found a negative association between Tm and ICH onset (OR = 0.977, 95% CI 0.968–0.987) but not between DTR and ICH onset. In stratified analyses, men and individuals aged ≥ 60 years were more susceptible to low-ambient temperature effects; corresponding adjusted ORs were 0.970 (95% CI 0.956–0.983) and 0.969 (95% CI 0.957–0.982), respectively. Tm significantly affected patients with deep ICH (OR = 0.976, 95% CI 0.965–0.988), but had no effect on lobar ICH. There was also seasonal heterogeneity in the effect of Tm on ICH onset, with Tm being negatively associated with ICH onset only in the warm season (OR = 0.961, 95% CI 0.941–0.982). Results suggest that the low-ambient temperature might trigger ICH onset, especially for the male and elderly population, providing important health guidance to prevent cold exposure–induced ICH.

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Funding

This work was supported by Tianjin Municipal Science and Technology Bureau Project (No. 21JCZDJC01230); Tianjin Key Medical Discipline (Specialty) Construction Project (No. TJYXZDXK-065B); and Tianjin Center for Health and Meteorology Multidisciplinary Innovation.

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All authors contributed to the study conception and design. Data collection, data cleaning, and statistical analysis were performed by Peilin Liu, Zhuangzhuang Chen, and Xiaoshuang Xia. The first draft of the manuscript was written by Peilin Liu, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Xin Li.

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This study was approved by the Ethics Committee of the Second Hospital of Tianjin Medical University (No.KY2020K142).

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All authors consent to publish this article in Environmental Science and Pollution Research.

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The authors declare no competing interests.

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Responsible Editor: Lotfi Aleya

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Liu, P., Chen, Z., Xia, X. et al. Potential role of ambient temperature as a trigger for intracerebral hemorrhage: a time-stratified case-crossover study in Tianjin, China. Environ Sci Pollut Res 30, 80988–80995 (2023). https://doi.org/10.1007/s11356-023-27942-x

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  • DOI: https://doi.org/10.1007/s11356-023-27942-x

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