National mortality burden attributable to the unprecedented heatwave in 2022 in China.

ABSTRACT:

Background

In 2022, China experienced an unprecedented heatwave event, raising concerns about the health impacts of heatwaves. This study aims to understand the devastating health risk of the exceptional heatwave in 2022 by comparing heatwave-related mortality burden in 2022 with that during 2000-2021.

Methods

We collected daily mortality and daily maximum temperature (DMT) during 2006-2017 in 364 locations (counties/districts) of China. Heatwave was defined as an event with 2 or more consecutive days of DMT exceeding the 92.5th percentile. We employed a distributed lag nonlinear model (DLNM) and a meta-analysis to examine the heatwave-mortality association based on the data from 364 counties/districts, and then this association was used to assess the mortality burden attrib

SUBMITTER: Hu JX 

PROVIDER: S-EPMC12703895 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature