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)
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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Nawata, K. and Kimura, M., “Evaluation of medical costs of kidney diseases and risk factors in
Japan,” Health, 2017, 9, 1734-1749.
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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.
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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.
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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.
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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.
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Nawata, K. (2020) "Risk Factors Affecting Ischemic Stroke: Potential
Side Effect of Antihypertensive Drugs", Health, 12, 437-455.