Published on in Vol 6 , No 6 (2022) :June
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/30630, first published
.

1 Department of Theoretical Social Security Research, National Institute of Population and Social Security Research, Tokyo, JP
2 Graduate School of Economics and Management, Tohoku University, Miyagi, JP