Geographical variations of the minimum mortality temperature at a global scale: a multicountry study

摘要: Background:Minimum mortality temperature (MMT) is an important indicator to assess the temperature-mortality association, indicating long-term adaptation to local climate. Limited evidence about the geographical variability of the MMT is available at a global scale.Methods:We collected data from 658 communities in 43 countries under different climates. We estimated temperature-mortality associations to derive the MMT for each community using Poisson regression with distributed lag nonlinear models. We investigated the variation in MMT by climatic zone using a mixed-effects meta-analysis and explored the association with climatic and socioeconomic indicators.Results:The geographical distribution of MMTs varied considerably by country between 14.2 and 31.1 C decreasing by latitude. For climatic zones, the MMTs increased from alpine (13.0 C) to continental (19.3 C), temperate (21.7 C), arid (24.5 C), and …