Prof. Kazumitsu Nawata

University of Tokyo, Japan

Email: nawata@tmi.t.u-tokyo.ac.jp

Qualifications

From 1982 to 1986 Ph.D., Stanford University, USA

From 1981 to 1982 M.A., Pennsylvania State University, USA

Publications (Selected)

1. Nawata, K., "Estimation of Sample Selection Bias Models by the Maximum Likelihood Estimator and Heckman's Two-Step Estimator," Economic Letters, 1994, Vol. 45, 33-40.
2. Nawata, K., Niita, A., Watanabe, A., and Kawabuchi, K., "An Analysis of the Length of Stay and the Effectiveness of Treatment for Hip Fractured Patients in Japan: Evaluation of the Revision of the 2002 Medical Service Fee Schedule," Journal of Health Economics, 2006, Vol. 25, No.4, 722-739.
3. Nawata, K., Niita, A., Watanabe, S., and Kawabuchi, K., “An Analysis of the Hip Fracture Treatments in Japan by the Discrete-Type Proportional Hazard and Ordered Probit Models,” Mathematics and Computers in Simulation, 2008, Vol. 78, No. 2&3, 303–312.
4. Nawata, K., Ii, M., Ishiguro, A., and Kawabuchi, K., “An analysis of the length of hospital stay for cataract patients in Japan using the discrete-type proportional hazard model,” Mathematics and Computers in Simulation. 2009, Vol. 79, 2889-2896.
5. Nawata, K., Ii, M., Toyama, H., and Takahashi, T., "Evaluation of the Inclusive Payment System Based on the Diagnosis Procedure Combination with respect to Cataract Operations in Japan," Health, Vol.1, 2009, No.2, 93-103.
6. Nawata. K. and Kawabuchi, K., “Evaluation of Length of Hospital Stay Joining Educational Programs for Type 2 Diabetes Mellitus Patients: Can We Control Medical Costs in Japan?” Health, 2015, 7, 256-269.
7. Nawata. K. and Kawabuchi, K., “Financial Sustainability of the Japanese Medical Payment System: Analysis of the Japanese Medical Expenditure for Educational Hospitalization of Patients with Type 2 Diabetes,” Health, 2015, 7, 1007-1021.
8. Nawata K. and Kawabuchi, K., “An econometric analysis of hospital length of stay for cataract operations in Japan by the Box-Cox transformation model and Hausman tests: Evaluation of the 2010 revision of the medical payment system,” Open Journal of Applied Science, 2015, 5, No.9, 559-570.
9. Nawata K. and Kawabuchi, K., ”Comparison of the length of stay and medical expenditures among Japanese hospitals for type 2 diabetes treatments: The Box-Cox transformation model under heteroscedasticity,” Health, 2016, 8, 49-63.
10. Nawata K. and Kawabuchi, K., “Did the revision of the Japanese medical payment system work properly? - An analysis of averages and variances of length of hospital stay for type 2 diabetes patients by individual hospital,” Health, 2016, 8, 505-517.
11. Nawata K. and Kawabuchi, K., “A long term evaluation of the Japanese medical payment system for cataract surgeries: Did the medical policy reduce the long hospital stay in Japan?” Health, 2016, 8, 905-919.
12. Nawata, K., Matsumoto, A., Kajihara,R., and Kimura,M., “Evaluation of the distribution of and factors affecting blood pressure using medical checkup data in Japan.” Health, 2017, 9, 124-137.
13. Nawata, K. and Kimura, M., “Reliability of blood pressure measurements: An analysis of the white coat effect and its fluctuations,” Health, 2017, 9, 506-519.
14. Nawata, K. and Kimura, M., “An analysis of the medical costs of and factors affecting diabetes using the medical checkup and payment dataset in Japan: Can we reduce the prevalence of diabetes?,” Health, 2017, 9, 1113-1127.
15. Nawata, K. and Kimura, M., “Evaluation of medical costs of kidney diseases and risk factors in Japan,” Health, 2017, 9, 1734-1749.
16. Nawata, K., Sekizawa, Y., and Kimura, M., “Evaluation of blood pressure control medicines using health and medical checkup data in Japan: Alternative methods for randomized controlled trials,” Health, 2018, 10, 587-603.
17. Nawata, K. and Kimura, M., “Does high systolic blood pressure truly increase medical expenditure? An empirical analysis of the new 2017 ACC/AHA hypertension guideline,” Health, 2018, 10, 1044-1065.
18. Nawata K, and Kimura, M., “Empirical studies of effects of high blood pressure on medical costs and heart disease: Is the 2017 ACC/AHA guideline supported by enough evidence?” Health, 2018, 10, 1498-1519.
19. Nawata, K., Sugano, H., and Kimura, M., “An analysis of the effects of blood pressure and antihypertensive drugs on heart disease,” Health, 2019, 11, 792-816.
20. Nawata, K. (2020) "Risk Factors Affecting Ischemic Stroke: Potential Side Effect of Antihypertensive Drugs", Health, 12, 437-455.