Analysis of important meteorological indicators of heatstroke mortality in Japan

Background and Aim: Heatstroke has become a serious issue in Japan. To reduce the risk of heatstroke, the Japanese government has implemented initiatives such as the “Heatstroke Alert”, which is issued when the wet bulb globe temperature (WBGT) exceeds 33 °C. Although such initiatives employ the WBGT as a standard, other important meteorological indicators may also be related to heatstroke. In this study, we analyzed important meteorological indicators of heatstroke mortality using machine learning.Methods: We used ICD-10: X30 for heatstroke mortality data. The analysis was performed for two age groups, i.e., the