We evaluate the causal effect of class size (i.e., number of students in a classroom) on incidence of class closure due to flu epidemic in 2015, 2016, and 2017, applying an instrumental variable method with the Maimonides rule to administrative data of public primary and middle school students...

This study examines the health capacity to work among older persons in Japan-that is, how much longer older persons can work based on their health status using nationwide population-based surveys. We first examine how much older persons could work if they worked as much as those with the same...