Short-term impact of diurnal temperature range on cardiovascular diseases mortality in residents in northeast China

Xuan Kai; Zhimin Hong; Yang Hong; Xiaolei Wang; Chunyang Li

doi:10.1038/s41598-023-38129-2

Short-term impact of diurnal temperature range on cardiovascular diseases mortality in residents in northeast China

Sci Rep. 2023 Jul 7;13(1):11037. doi: 10.1038/s41598-023-38129-2.

Authors

Xuan Kai¹, Zhimin Hong², Yang Hong³, Xiaolei Wang⁴, Chunyang Li⁵

Affiliations

¹ Department of Mathematics, School of Sciences, Inner Mongolia University of Technology, Hohhot, 010051, China.
² Department of Mathematics, School of Sciences, Inner Mongolia University of Technology, Hohhot, 010051, China. zhmhong@imut.edu.cn.
³ Department of Mechanics, School of Sciences, Inner Mongolia University of Technology, Hohhot, 010051, China.
⁴ Department of Ultrasound, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010050, China.
⁵ Department of Neurology, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010050, China.

Abstract

It has been reported that cardiovascular disease (CVD) has become one of the major threats to global public health and is associated with climate change. Several previous studies have shown the influence of ambient temperature on CVD, but lack some evidence for the short-term effect of diurnal temperature range (DTR) on CVD mortality in northeast China. This is the first study to assess the correlation between DTR and CVD mortality in Hulunbuir located in northeast China. Daily CVD mortality data and meteorological data were collected from 2014 to 2020. A quasi-Poisson generalized linear regression with a distributed lag non-linear model (DLNM) was applied to exploring the short-term impact of DTR on CVD mortality. Stratified analyses by gender, age, and season were conducted and the short-term impacts of extremely high DTR on CVD mortality were investigated. In this study, a total of 21,067 CVD mortality cases were recorded in Hulunbuir, China from 2014 to 2020. Compared to the reference value (11.20 [Formula: see text]C, 50[Formula: see text] percentile), a "U-shaped" non-linear relationship between DTR and CVD mortality was observed, and extremely high DTR increased the risk of CVD mortality. The short-term effect of extremely high DTR occurred immediately and lasted up to 6 days. In addition, the male and the age [Formula: see text] 65 groups were more likely to be affected by extremely high DTR compared with the female and the age < 65 groups, respectively. The results also showed that extremely high DTR in cold season had a more adverse effect on CVD mortality than warm season. This study suggests that extremely high DTR for cold season should be paid enough attention to for residents in northeast China. The male and the age [Formula: see text] 65 groups were more vulnerable to the impacts of DTR. The study results may provide some suggestions for decision-making by local public health authorities to avoid the adverse impacts of high DTR, and improve the health of residents, especially vulnerable groups in cold season.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Cardiovascular Diseases* / epidemiology
China / epidemiology
Cold Temperature
Female
Hot Temperature
Humans
Male
Temperature