title: How much does latitude modify temperature-mortality relationship in 13 eastern US cities?
abstract: Although several studies have documented that latitude might be an effect modifier of the association between temperature and mortality, little is known about how much latitude modifies the temperature-mortality relationship. In this study, we examined this research question using a distributed lag non-linear model and meta-regression analysis based on data from 13 large cities of eastern US from the US National Morbidity, Mortality, and Air Pollution Study. We found that cold effects lasted about 1 month while hot effects were acute and short-term. Meta-regression analysis showed that latitude modified both the cold and hot effects with statistical significance. The cold effect decreased with the latitude increment, with -0.11 % change of mortality effect for 1° increment, while the hot effect increased with the latitude increment, with 0.18 % change of mortality effect for 1° increment. This finding indicates the importance of latitude on temperature-related mortality risk, which is helpful for city to develop localized effective adaptation strategy in the context of climate change.
authors.affiliation: Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, 160#, Qunxian Road, Panyu District, Guangzhou, 511430, China.
authors.forename: Jianpeng
authors.initials: J
authors.lastname: Xiao
authors.forename: Ji
authors.initials: J
authors.lastname: Peng
authors.forename: Yonghui
authors.initials: Y
authors.lastname: Zhang
authors.forename: Tao
authors.initials: T
authors.lastname: Liu
authors.forename: Shannon
authors.initials: S
authors.lastname: Rutherford
authors.forename: Hualiang
authors.initials: H
authors.lastname: Lin
authors.forename: Zhengmin
authors.initials: Z
authors.lastname: Qian
authors.forename: Cunrui
authors.initials: C
authors.lastname: Huang
authors.forename: Yuan
authors.initials: Y
authors.lastname: Luo
authors.forename: Weilin
authors.initials: W
authors.lastname: Zeng
authors.forename: Cordia
authors.initials: C
authors.lastname: Chu
authors.forename: Wenjun
authors.initials: W
authors.lastname: Ma
mesh_terms: D000368:Aged; D002947:Cities / Q000453:epidemiology; D006801:Humans; D009026:Mortality / Q000639:trends*; D017711:Nonlinear Dynamics; D012044:Regression Analysis; D012306:Risk; D013696:Temperature; D014481:United States / Q000453:epidemiology