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Adjunct member

Kazumitsu Nawata< back to the list

Professor Emeritus,University of Tokyo

【Profile】

Education
1986 Ph.D., Department of Economics, Stanford University
1982 M.A., Department of Economics, Pennsylvania State University
1979 B. Eng., Faculty of Engineering, University of Tokyo

Experience
2022- Professor (Specially Appointed), Hitotsubashi Institute for Advanced Study, Hitotsubashi University
2016 Academic Visitor, Department of Economics & Related Studies, University of York
2000 - 2021 Professor, Graduate School of Engineering, University of Tokyo
1999 Professor, Department of Advanced Social and International Studies, University of Tokyo
1989 Associate Professor, Department of Social and International Relations, University of Tokyo
1993 - 1994 Visiting Professor, Department of Economics, University of Western Australia
1986 - 1989 Assistant Professor, Department of Economics, University of Chicago

 

【Publications】

 

Books (English books, only)

  • Probability and Statistics I, University of Tokyo, Engineering Course, 2013.
  • "Population Growth and Sustainability -Requirements for Establishing a Sustainable Society-" in K. Mori ed., Society in 2050 -Choice for Global Sustainability-, 1999, 15-49, Maruzen Planet, Tokyo.
 

Papers (English papers, only)

○ Paper Published in Refereed Journal
 
  • Nawata, K., "Estimation of Tobit Models When Micro-Survey Data is not Available," G.B.　Alexander Foundation Working Paper, 1987, University of Chicago.
  • Nawata, K., "Distribution-Free Estimation of Binary Choice Models," H.G.B. Alexander　Foundation Working Paper, 1987, University of Chicago.
  • Nawata, K., "Asymptotic Properties of Grouping Estimator for Binary Choice Models, " H.G.B. Alexander Foundation Working Paper, 1987, University of Chicago.
  • Nawata, K., "Least Absolute Deviations Estimators in Transformation," H.G.B. Alexander　Foundation Working Paper, 1988, University of Chicago.
  • ○Nawata, K., "Semiparametric Estimation and Efficiency Bounds of Binary Choice Models When the Models Contain one Continuous Variable," Economics Letters, 1989, Vol. 31,21-26.
  • Nawata, K., "Semiparametric Estimation of Binary Choice Models Based on Medians of the　Grouped Data," Working Paper, 1989, Dept. of Social and International Relations,　University of Tokyo.
  • Nawata, K., "Estimation of Censored Regression Models Using Aggregated Data," Working Paper,　1989, Dept. of Social and International Relations, University of Tokyo.
  • ○Nawata, K., "Robust Estimation Based on Grouped-Adjusted Data in Linear Regression Models," Journal of Econometrics, 1990, Vol. 43, 317-336.
  • ○Nawata, K., "Robust Estimation Based on Grouped-Adjusted Data in Censored Regression Models," Journal of Econometrics, 1990, Vol. 43, 337-362.
  • Nawata, K., "The Least Absolute Deviations Estimators in Generalized Regression Models,"　Working Paper, 1990, Dept. of Social and International Relations, University of Tokyo.
  • Nawata, K., "Statistical Tests of Interdependence of the World Economy," 東京大学教養学部社会科学紀要, 1990, Vol.39, 235-242.
  • ○Nawata, K., "A Note on Estimation of Models with Sample Selection Biases," Economic Letters, 1993, Vol. 42, 15-24.
  • Nawata, K., “A Monte Carlo Comparison of the Maximum Likelihood Estimator and Heckman’s Two-Step Estimator in Models with Sample-Selection Biases,” Proceedings, International Congress on Modeling and Simulation, 1993, 2, 651-656.
  • ○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.
  • ○Nawata, K., "Estimation of the Boundary of the Two Regions by the Grouping Method,"　Journal of the Japan Statistical Society, 1994, Vol. 24, 14-35.
  • ○Nawata, K., "Notes on Estimation of the Tobit Models by Powell's Least Absolute Deviations Estimator," Economic Studies Quarterly, 1994, Vol. 45, Issue4, 339-346.
  • ○Nawata, K., "Estimation of Sample-Selection Models by the Maximum Likelihood Method," Mathematics and Computers in Simulation, 1995, Vol. 39, 299-303.
  • Nawata, K., and M. McAleer, "Finite Sample Properties of the Tests for Models with Sample Selection Biases,"　 Working Paper, Dept. of Social and International Relations, 1995, University of Tokyo.
  • Nawata, K., “A Note on the Asymptotic Expansion of the T-Tests for Nonlinear Hypothesis Testing,” Proceedings, International Congress on Modeling and Simulation, 1995,4, 149-153.
  • Nawata, K., "An Optimal Investment Schedule and Competitive Equilibrium Price of An　Exhaustible Resource," 社会科学紀要, 1995, Vol. 44, 37-56.
  • ○Nawata, K., and Nagase N, "Estimation of Sample Selection Biases Models," Econometric Reviews, 1996,   15, 387-400.
  • ○Nawata, K., "Estimation of generalised regression models by the grouping method," Mathematics and Computers in Simulation, 1997, 43, 503-510.
  • Nawata, K., and M. McAleer ,"Sizes and Powers of Tests for Models with Sample Selection Biases –A Monte Carlo Comparison-", Proceedings, International Congress on Modeling and Simulation, 1997, 3, 1333-1338.
  • Nawata, K., " A Note on the Asymptotic Distribution of a Nonlinear Function of Estimators, " Working Paper, Working Paper, Dept. of Advanced Social and International Studies, 1997, University of Tokyo.
  • Nawata, K., “A Poisson Regression Model of Fatal Traffic Accidents Involving Small Passenger Sedans in Japan,” Proceedings, International Congress on Modeling and Simulation, 1999, 2, 465-470.
  • Nawata, K., “Estimation of the Female Labor Participation and Wage Equation Model by the Maximum Likelihood Method: An Empirical Example,” 2000.
  • ○Nawata, K., and M. McAleer, “Size Characteristics of Tests for Sample Selection Bias: A Monte Carlo Comparison and Empirical Example,” Econometric Reviews, 2001, Vol. 20, 105-112.
  • ○Nawata, K., “Estimation of the Female Labor Supply Models by Heckman’s Two-Step Estimator and the Maximum Likelihood Estimator,” Mathematics and Computers in Simulation, 2004,Vol. 64, 385-392.
  • ○Nawata, K., and M. Ii, “Estimation of Labor Participation and Wage Equation Model of the Japanese Married Female,” Journal of the Japanese and International Economies, 2004,　 18, 301-315. (巻頭論文)
  • Nawata, K., Niita, A., Watanabe, S,. and Kawabuchi, K., “An Analysis of the Length of Stay and the Effectiveness of Treatment for Hip Fractured Patients in Japan,”　Proceedings, International Congress on Modelling and Simulation　2005, (MODSIM2005), 920-926.
  • ○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.
  • ○Nawata, K., “A Monte Carlo Analysis of the Type II Tobit Maximum Likelihood Estimator When the True Model is the Type I Tobit Model,”　Economics Bulletin, 2007,Vol. 3, No. 54, 1-10.
  • Nawata, K., Ii,M.,  Ishiguro,A.,  and Kawabuchi, K., “An Analysis of the Length of Hospital Stay for Cataract Patients in Japan,” Proceedings, International Congress on Modelling and Simulation, 2007 (MODSIM 2007), 1014-1020.
  • ○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, 78, No. 2&3,303–312.
  • ○Nawata, K., Ii,M., Ishiguro,A.,  and Kawabuchi,,“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,
  • ○Matsumoto, A., Hara,H., and Nawata,K., “Bayesian Estimation of the Asymmetric Employment Adjustment Model,” Journal of the Japan Statistical Society, 2009, 39, 29-47.
  • ○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.
  • Nawata, K., Ii,M., Toyama,H.,  and Takahashi,T., “An analysis of the new medical payment system in Japan,” Proceeding, International Congress on Modelling and Simulation ,2009(MODSIM 2009), 157-163.
  • ○Sawada, Y., Nawata,K., Ii,M., and M. J. Lee, "Did the Financial Crisis in Japan Affect Household Welfare Seriously?" Journal of Money, Credit and Banking, 2011, 43, 297–324.
  • Nawata, K. and Kawabuchi,K., “Evaluation of the DPC-based Inclusive Payment System in Japan for Cataract Operations,” Proceedings, International Congress on Modelling and Simulation, 2011(MODSIM 2011), 1317-1323, 2011.
  • Nawata,K., and, Kawabuchi,K., "A New Model for Analyzing the Length of Hospital Stay: Evaluation of the DPC-based Inclusive Payment System in Japan for Cataract Operations", 関西計量経済学研究会（神戸大学）発表論文.
  • ○Nawata K. and Kawabuchi,K., “Evaluation of the DPC-based inclusive payment system in Japan for cataract operations by a new model,” Mathematics and Computers in Simulation  2013,  93, 76–85.(Erratum, 2015, Mathematics and Computers in Simulation 109, 212-214.)
  • Nawata, K. “Robust estimation based on the first- and third-moment restrictions of the power transformation model,” IPRC Working Paper ,2013, No. 8, University of Tokyo,
  • Matsumoto A., Hara H. and Nawata, K. “An analysis of the safety and health conditions of contract workers in Japan’s nuclear utility industry -Can we keep the safety standard of the nuclear power plans? –,” IRPC Discussion Paper ,2013, No.9, Innovation Policy Research Center，University of Tokyo.
  • Nawata, K. “A new estimator of the Box-Cox transformation model using moment conditions,” IPRC Working Paper, 2013, No. 6, University of Tokyo,
  • ○Nawata, K. “A new estimator of the Box-Cox transformation model using moment conditions,” Economics Bulletin, 2013, Vol. 33, Issue 3, 2287-2297.
  • Nawata, K. and Kawabuchi,K., “A new test for the power transformation model -An analysis of the length of the hospital stay for diabetes patients in Japan-” , IPRC Working Paper, 2013, No. 7, University of Tokyo,
  • Nawata, K., “Robust estimation based on the first- and third-moment restrictions of the power transformation model,” IPRC Working Paper, 2013, No. 8, University of Tokyo,
  • Matsumoto, A., Hara H, and Nawata,K., “Safety and Health of Contract Workers in Japan's Nuclear Utility Industry: Can we Maintain Safety Standards at Nuclear Power Plants,” IPRC Working Paper, 2013,No. 9, University of Tokyo,
  • Nawata. K. and Kawabuchi,K., “Evaluation of the 2006 revision of the medical payment system in Japan by a new estimator of the power transformation model – An analysis of the length of the hospital stay for cataract operation,” Proceedings, Proceedings, International Congress on Modelling and Simulation , 2013(MODSIM 2013), 1277-1283, 2013.
  • Nawata. K., “Robust estimation based on the first- and third-moment restrictions of the power transformation model,” Proceedings, International Congress on Modelling and Simulation, 2013 (MODSIM 2013), 1284-1290.
  • ○Nawata, K. and Kawabuchi, K., ''A new test for the Box-Cox transformation model: An analysis of length of hospital stay for diabetes patients in Japan'', Economics Bulletin, 2014, Vol. 34 No. 1, 324-332.
  • ○Nawata. K. and M. McAleer, “The maximum number of parameters for the Hausman test when the estimators are from different sets of equations,” Economics Letters. 2014, Vol. 123, No. 3,  291–294.
  • Nawata, K., “A semiparametric estimator that requires neither specific distributions nor an i.i.d condition of the error terms and tests for the Box-Cox transformation model,” IPRC Working Paper ,2014,No. 13, University of Tokyo,
  • Nawata, K. and Kawabuchi, K., “Evaluation of the 2006 revision of the medical payment system in Japan by the Box-Cox transformation model and the Hausman test  -An analysis of the length of the hospital stay for cataract operations-“, IPRC Working Paper, 2014, No. 15, University of Tokyo, 2014.
  • ○Matsumoto, A., Hara H, and Nawata,K., “Safety and Health of Contract Workers in Japan's Nuclear Utility Industry: Can we Maintain Safety Standards at Nuclear Power Plants,”　Journal of Reviews on Global Economics, 2014, Vol. 3, 401-414.
  • ○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.
  • ○Nawata, K. “Robust estimation based on the third-moment restriction of the error terms for the Box-Cox transformation model: An estimator consistent under heteroscedasticity,” Economics Bulletin, 2015, Vol. 3, No. 2, 1056　-1064.
  • ○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,” 2015, Health, Health, 2015, 7, 1007-1021.
  • ○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.
  • ○Nawata,K., “Is Japanese medical system sustainable?,” Journal of Health & Medical Economics, 2015,Vol.1, No1:3.
  • Nawata. K. and Kawabuchi,K., “Evaluation of financial sustainability of the Japanese medical system: Analysis of the length of hospital stay for diabetes patients,” Proceedings, International Congress on Modelling and Simulation ,2015(MODSIM 2015), 8-14.
  • ○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.
  • ○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.
  • ○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.
  • ○Nawata, K., “Asymptotic efficiency of the maximum likelihood estimator for the Box-Cox transformation model with heteroscedastic disturbances,” Open Journal of Statistics,2016, 6, 835-841.
  • ○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.
  • ○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.
  • ○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.
  • ○Nawata, K. and Kimura,M.,  “Evaluation of medical costs of kidney diseases and risk factors in Japan,” Health, 2017, 9, 1734-1749.
  • ○Zhang J. and Nawata, K., “ A comparative study on predicting influenza outbreaks,” BioScience Trends. 2017; 11(5):533-541.
  • ○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.
  • ○Zhang J. and Nawata, K., “Multi-step prediction for influenza outbreak by an adjusted long short-term memory,” Epidemiology & Infection,2018, 146, 809-816.
  • ○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.
  • ○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.
  • ○Kao Y.S., Nawata, K.,  and C. Y. Huang,　“An Exploration and Confirmation of the Factors Influencing Adoption of IoT-Based Wearable Fitness Trackers,” International Journal of Environmental Research and Public Health 2019, 16(18), 3227;
  • ○Kao Y.S., Nawata, K.,  and C. Y. Huang, “Systemic Functions Evaluation based Technological Innovation System for the Sustainability of IoT in the Manufacturing Industry,” Sustainability, 2019, 11, 2342.
  • ○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
  • ○He H. and K. Nawata　(2019) “Ad-TSNE: Visualizing High Dimensional Data Based On Adversarial Neural Networks,” International Core Journal of Engineering, 2019, 5, 42-51.
  • ○He H. and K. Nawata (2019), “Probabilistic Regression and Missing Values Compensation for P2P Lending,” (EDMI 2019), Advances in Economics, Business and Management Research, 91, 571-575.
  • ○Kao Y.S., Nawata, K.,  and C. Y. Huang “Evaluating the Performance of Systemic Innovation Problems of the IoT in Manufacturing Industries by Novel MCDM Methods,” Sustainability 2019, 11(18), 4970
  • ○Nawata, K. (2022) “Heart Diseases, Hypertension and Effects of Antihypertensive Medications: Is Hypertension a True Risk Factor of　Heart Diseases?” Frontiers in Public Health, doi: 10.3389/fpubh.2022.929840
 
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