Impact of diurnal temperature range on cardiovascular disease hospital admissions among Chinese farmers in Dingxi (the Northwest China)

BMC Cardiovascular Disorders

Jintao Qi¹  Guangyu Zhai²  Guorong Chai³ 

[1] School of Economics and Management, Lanzhou University of Technology, 730050, Lanzhou, People’s Republic of China;School of Economics and Management, Lanzhou University of Technology, 730050, Lanzhou, People’s Republic of China;School of Management, Lanzhou University, 730000, Lanzhou, People’s Republic of China;School of Management, Lanzhou University, 730000, Lanzhou, People’s Republic of China;

关键词: Diurnal temperature range;    Cardiovascular diseases;    Distributed lag nonlinear model;    Poverty area;   

DOI  :  10.1186/s12872-021-02065-8

来源: Springer

【 摘 要 】

BackgroundDiurnal temperature range (DTR) has been widely applied in exploring its effect on cardiovascular disease (CVD). However, few studies have investigated the correlations between DTR and CVD in poor rural areas in China. This study aimed to examine the association between DTR and CVD in rural China.MethodsA distributed lag nonlinear model was used to evaluate the relationship between DTR and CVD risk among farmers living in the city of Dingxi (Northwest China) in the period from January 1, 2016 to December 31, 2019.ResultsWe observed nonlinear M-patterns between the relative risk (RR) of DTR (reference: median DTR, 12 °C) and CVD hospitalizations in all subgroups. The peak RR of CVD was noticed at DTR of 6 °C (total: 1.418; men: 1.546; women: 1.403; young: 1.778; old: 2.549) and 17 °C (total: 1.781; men: 1.937; women: 1.712; young: 2.233; old: 1.798). The adverse effect of DTR on CVD risk was more pronounced in females (RR 1.438) and elderly (RR 2.034) than males (RR 1.141) and younger adults (RR 1.852) at the extremely low (5th, 4 °C) DTR. The reverse was observed at the extremely high DTR (95th, 19 °C) (male: 1.267; females: 0.993; young: 1.586; old: 1.212).ConclusionsDTR is associated with CVD morbidity. This association was more pronounced in women and elderly, but men and younger peoples at extremely high DTR (19 °C). Future measures should take DTR into account to prevent CVD among susceptible populations.

【 授权许可】

CC BY