We investigated the causal effect of college education on smoking, drinking, sleeping, and cancer screening behavior in Japan. To estimate said effect, we leveraged a unique instrument in which a mismatch between Japanese superstition and school year in 1967 leading to an increase in college...

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...

We empirically examine how the decision to purchase private health insurance and hospitalization are made based on labor income, socio-demographic factors, and private health insurance. The increase in household labor income and wealth has a positive effect on purchasing private health...

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...