Impacts of hot and cold nights on mental disorders: A three-stage nationwide hospital-based time-series study with 1.2 million patients in China

Q1 Social Sciences
Junwen Tao , Yongming Zhang , Qiyue Wu , Min Yang , Shilu Tong , Zhoupeng Ren , Zhiwei Xu , Hung Chak Ho , Mohammad Zahid Hossain , Yuanyong Xu , Xianyu Wei , Zhiwei Li , Hao Zheng , Hong Su , Wenyi Zhang , Jian Cheng
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Abstract

Background

Climate change has shifted and will continue to alter the patterns of daytime and nighttime temperatures. However, it remains unclear whether hot days and nights, as well as cold days and nights, have varying impacts on mental disorders.

Methods

Daily hospital-based data on 1.2 million outpatient visits for mental disorders were obtained from 15 Chinese cities (2011-2015). The index of hot day excess, hot night excess, cold day excess, and cold night excess were used to measure the intensity of hot/cold days and nights. Firstly, a distributed lag non-linear model was used to estimate the risk of mental disorders associated with hot/cold days and nights for each city. Secondly, city-specific estimates were pooled by multivariate meta-analysis to obtain national effect estimates. Thirdly, the attributable fraction of mental disorders was estimated for the nation, genders, age groups, heating methods, and air conditioning penetration rates.

Results

Our findings revealed that both hot and cold nights were associated with a higher risk of mental disorders compared to hot and cold days. The attributable fraction of mental disorders was higher for cold (night: 25.74%; day: 19.65%) in contrast to heat (night: 16.91%; day: 7.24%). Males, the elderly, cities using central heating, and cities with low air conditioning penetration rates were vulnerable to cold nights.

Conclusions

This nationwide study highlights the adverse effects and significant burden of hot and cold nights on mental disorders. It underscores the potential for mitigating these impacts through the adoption of air conditioning, particularly in southern cities across China.

冷热夜对精神障碍的影响:一项涉及120万中国患者的三阶段全国医院时间序列研究
气候变化已经改变并将继续改变白天和夜间的温度模式。然而,目前尚不清楚炎热的白天和夜晚,以及寒冷的白天和夜晚,是否对精神障碍有不同的影响。方法收集中国15个城市(2011-2015年)120万例精神障碍门诊患者的日常住院数据。采用热昼过剩指数、热夜过剩指数、冷昼过剩指数和冷夜过剩指数来衡量冷热昼夜的强度。首先,采用分布滞后非线性模型估计各城市与冷热昼夜相关的精神障碍风险。其次,通过多变量荟萃分析汇总城市特定的估计,以获得全国效应估计。第三,估计了国家、性别、年龄组、供暖方式和空调普及率的精神障碍归因比例。我们的研究结果显示,与炎热和寒冷的白天相比,炎热和寒冷的夜晚都与精神障碍的风险更高有关。感冒患者的精神障碍归因率更高(夜间:25.74%;白天:19.65%),而夜晚:16.91%;天:7.24%)。男性、老年人、使用中央供暖系统的城市和空调普及率较低的城市易受寒冷夜晚的影响。结论:这项全国性的研究强调了冷热夜对精神障碍的不良影响和重大负担。它强调了通过采用空调来减轻这些影响的潜力,特别是在中国的南方城市。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Global Transitions
Global Transitions Social Sciences-Development
CiteScore
18.90
自引率
0.00%
发文量
1
审稿时长
20 weeks
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