Effects of Diurnal Temperature Range on Daily Mortality in Hefei City, China: A time Series Analysis

• 作 者: TANG Jing XIAO Changchun LI Yurong ZHANG Junqing ZHAI Haoyuan GENG Xiya DING Rui ZHAI Jinxia
• 出 处: 第一届中国环境与健康大会
• 发表日期: 2017年11期
• 关键词: Diurnal temperature range Mortality Distributed lag non-linear model Season

　　Although the adverse impacts of diurnal temperature range (DTR) on daily mortality have been proved,the results about modifiers are inconsistent,and few studies were conducted in developing inland country.This study aims to evaluate the effects of DTR on cause-/sex-/age-specific mortality and whether season might modify any association in Hefei city,China during 2012-2015.Quasi-Poisson generalized linear regression models combined with a distributed lag non-linear model (DLNM) were applied to evaluate the relationships between DTR and non-accidental,cardiovascular and respiratory mortality.We observed a J-shaped relationship between DTR and cause-specific mortality.With a DTR of 8.3 ℃ as the reference,the cumulative effects of extreme high DTR were significantly higher for all types of mortality than effects of lower or moderate DTR in full year.When stratified by season,extreme high DTR in spring had a greater impact on all cause-specific mortality than other three seasons.Male and the elderly (≥ 65 years) were consistently more susceptible to extreme high DTR than female and the youth (< 65 years) for non-accidental and cardiovascular mortality.To the contrary,female and the youth were more susceptible to extreme high DTR than male and the elderly for respiratory morality.The study suggests that extreme high DTR is a potential trigger for non-accidental mortality in Hefei city,China.Our findings also highlight the importance of protecting susceptible groups from extreme high DTR especially in the spring.