2026 Asian Workshop on Econometrics and Health Economics, Seoul, South Korea, December 2026

We are holding 2026 Asian Workshop Workshop on Econometrics and Health Economics, in December 13-16, 2026. Looking forward to seeing you in Seoul. [link]

Selected Publications

Bai, Yuting, Shiko Maruyama, Si Wang (2025) “Nonlinear Relationship between the Number of Children and Late-Life Cognition,” China Economic Review, 91. [link]

Fujimoto, Ayame, Rong Fu, Haruko Noguchi, Shiko Maruyama, Sayaka Nakamura (2025) “Breaking Brand: An Observational Study on Pharmacy-Hospital-Patient Relationships and Generic Drug Utilisation in Japan,” BMJ Open, 15(5). [link]

McGinn, Eamon, Shiko Maruyama (2025) “Why Waste Your Vote? Informal Voting in Compulsory Elections in Australia,” Economic Record, 101(334), 275-300. [link]

Maruyama, Shiko, Sayaka Nakamura (2025) “Wholesome Lunch to the Whole Classroom: Short- and Long-Term Effects on Early Teenagers’ Body Weight,” Health Economics, 34(7), 1255-1273. [link]

Li, A., and Maruyama, S. (2024) “Who Suffered Most in the Pandemic? A Distribution Regression Analysis of Happiness in Japan,” Japanese Economic Review, 75, 637-690. [link]

Mu, Chunzhou, Shiko Maruyama (2024) “An Incentive Program with Almost No Incentive: Overlooked Benefits of Pay for Performance,” Economic Record, 100(331), 491-512. [link]

Ishimura, N, Inoue, K., Maruyama, S., Nakamura, S., and Kondo, N. (2024) "Income Level and Impaired Kidney Function Among Working Adults in Japan," JAMA Health Forum, 5(3): e235445. [link]

Maruyama, S., and Heinesen, E. (2020) "Another Look at Returns to Birthweight," Journal of Health Economics, 70. [link]

Maruyama, S., and Nakamura, S. (2018) "Why Are Women Slimmer Than Men in Developed Countries?" Economics and Human Biology, 30, 1-13. [link]

Eskil Heinesen, Susumu Imai, and Shiko Maruyama (2018) "Employment, Occupational Mobility and Job Skills of Cancer Survivors," Journal of Health Economics, 58, 151-175. [link]

Perks, G., and Maruyama, S. (2017) "The 'Flock' Phenomenon of the Sydney Lockout Laws: Dual Effects on Rental Prices," Economic Record, 93(303), 517-532. [link]

Maruyama, S., and Johar, M. (2017) "Do Siblings Free-Ride in 'Being There' for Parents?" Quantitative Economics, 8(1), 277-316. [link]
[Formerly circulated as "Externality and Strategic Interaction in the Location Choice of Siblings under Altruism toward Parents," UNSW Australian School of Business Research Paper, No. 2012 ECON 15, University of New South Wales, February 2012.]

Johar, M., Maruyama, S., and Truong, J. (2017) "The Contribution of Western Fast Food to Fast-Growing Body Mass in China," Applied Economics, 49(8), 797-811. [link]

Maruyama, S., and Nakamura, S. (2015) "The Decline in BMI among Japanese Women after WWII," Economics and Human Biology, 18, 125-138. [link]

Maruyama, S. (2015) "The Effect of Coresidence on Parental Health in Japan," Journal of The Japanese and International Economies, 35, 1-22. [link]
[Formerly circulated as "Inter Vivos Health Transfers: Final Days of Japanese Elderly Parents," UNSW Australian School of Business Research Paper, No. 2012 ECON 20, 2012.]

Johar, M., Maruyama, S., and Nakamura, S. (2015) "Reciprocity in the Formation of Intergenerational Coresidence," Journal of Family and Economic Issues, 36(2), 192-209. [link]
[Formerly circulated as "Transition to Parent-Child Coresidence: Parental Needs and the Strategic Bequest Motive," UNSW Australian School of Business Research Paper, No. 2010 ECON 05, 2010.]

Maruyama, S. (2014) "Estimation of Finite Sequential Games," Journal of Econometrics, 178(2), 716-726. [link]
[Formerly circulated as "Estimating Sequential-Move Games by a Recursive Conditioning Simulator," UNSW Australian School of Business Research Paper, No. 2009 ECON 01, 2009.]

Johar, M., and Maruyama, S. (2014) "Does Coresidence Improve an Elderly Parent's Health?" Journal of Applied Econometrics, 29(6), September/October 2014: 965-983. [link]

Maruyama, S., and Yin, Q. (2012) "The Opportunity Cost of Exercise: Do Higher-Earning Australians Exercise Longer, Harder, or Both?" Health Policy, 106(2), July 2012: 187-194. [link]

Johar, M., and Maruyama, S. (2011) "Intergenerational Cohabitation in Modern Indonesia: Filial Support and Dependence," Health Economics, 20(S1), September 2011: 87-104. [link]

Maruyama, S. (2011) "Socially Optimal Subsidies for Entry: The Case of Medicare Payments to HMOs," International Economic Review, 52(1), 105-129. [link]
[Formerly circulated as "Measuring the Welfare Effect of Entry in Differentiated Product Markets: The Case of Medicare HMOs," School of Economics Discussion Paper: 2008/01, 2008.]

Submitted/Working Papers

Zhang, Yangyang, Xinye Zheng, Shiko Maruyama (2025) “The Dual Burdens of Disability and Gender Norms: Understanding Disabled Women's Fertility in Developing Countries” [link]

Bai, Yuting, Jun Hyung Kim, Anqi Li, Shiko Maruyama, Zhe Yang (2025) “A House for My Family: The Impacts of Down Payment Rate on Marriage and Fertility” [link]

Health Shocks and the Evolution of Earnings over the Life-Cycle with Elena Capatina and Michael Keane [link]

Socio-Economic Disparities in U.S. Healthcare Spending: The Role of Public vs. Private Insurance with Elena Capatina and Michael Keane (R&R)

Salient Gender Difference in the Wage Elasticity of General Practitioners' Labour Supply with Chunzhou Mu, UNSW Australian School of Business Research Paper, No. 2013 ECON 16, University of New South Wales, June 2013. [link]

Work in Progress

In-Utero Social Interaction of Twins with Eskil Heinesen and Susumu Imai

Reversing Fertility Differentials with Natalia Aranco, Yoko Ibuka, and Fusae Okaniwa

Media Coverages

Are Residents Better Off under the Sydney 'Lockout Laws'? [link]

A short article was published in Nikkei Business Online (in Japanese only). [link]

A short article was published in Nikkei Business Online (in Japanese only). [link]

News

Taking up a Professor position at OSIPP, The University of Osaka, from April 2025.

Promoted to the Co-Editor of Health Economics September 2024.

Yangtze River Scholars Distinguished Professor (Changjiang Scholar, 長江学者) , IESR, Jinan University, January 2023.

The Board of Directors of International Health Economics Association January 2023.

Appointed a Co-Editor of Japanese Economic Review July 2018.

Taking up a Professor position at IESR, Jinan University, from November 2021.

Appointed an Associate Editor of Health Economics July 2018.

Taking up an Associate Professor position at University of Technology Sydney (UTS), from March 2017.

Taking up a Senior Lecturer position at University of Technology Sydney (UTS), from December 2013.

Australian Research Council Discovery Project grant: "The Economics of Filial Informal Care: Future Trends and Directions for Policy Supports," as Lead Chief Investigator with Meliyanni Johar and Sayaka Nakamura, 2011 – 2013.

Australian School of Business Non-Professorial Research Achievement Awards, June 2010.