npj Climate and Atmospheric Science (Nov 2024)

Non-fatal Injury burden attributed to night-time temperature during 1990s-2010s in China

  • Jianxiong Hu,
  • Yuliang Er,
  • Xiao Deng,
  • Tao Liu,
  • Fangfang Zeng,
  • Pengpeng Ye,
  • Guanhao He,
  • Qijiong Zhu,
  • Ye Jin,
  • Sujuan Chen,
  • Cuirong Ji,
  • Ziqiang Lin,
  • Fengrui Jing,
  • Leilei Duan,
  • Yuan Wang,
  • Wenjun Ma

DOI
https://doi.org/10.1038/s41612-024-00825-9
Journal volume & issue
Vol. 7, no. 1
pp. 1 – 9

Abstract

Read online

Abstract The night-time temperature-related injury risks and burdens were unclear. Using 11,512,467 non-fatal injury cases in 243 surveillance hospitals across China from 2006-2021, we estimated the associations between daytime or night-time temperature and injury by a time-stratified case-crossover study, and compared their injury burden during 1990s–2010s. We found the excess risk (ER) for per 1°C rise in night-time temperature (ER = 1.21%, 95%CI:1.03%,1.39%) was greater than that in daytime (ER = 0.86%, 95%CI:0.72%,1.00%). Compared with the 1980s, the attributable fractions (AFs) for daytime and night-time temperature change during the 1990s–2010s were 0.59% (95%eCI:0.54%,0.67%) and 0.73% (95%eCI:0.69%,0.77%), respectively. Spatially, the higher AFs of night-time temperature were more widely distributed than daytime temperature. The non-fatal injury risk attributed to night-time temperature was stronger than daytime temperature, and increased night-time temperatures posed a heavier injury burden compared with daytime temperature in China. Our findings indicate that high night-time temperature is an important injury risk in the context of climate change.