1. Department of Community Health Nursing Division of Health Sciences and Nursing Graduate School of Medicine The University of Tokyo Bunkyo‐ku Tokyo Japan
2. Department of Statistics and Computer Science College of Nursing Art and Science, University of Hyogo Akashi City Hyogo Japan
3. Department of Medical Statistics School of Nursing Mejiro University Saitama City Saitama Japan
4. Department of Human Health Sciences Graduate School of Medicine Kyoto University Kyoto City Kyoto Japan
5. Department of Nursing Faculty of Healthcare Sciences Chiba Prefectural University of Health Sciences Chiba City Chiba Japan
6. Faculty of Policy Studies Doshisha University Kyoto City Kyoto Japan