Andrew Ching's Homepage

Welcome to Andrew Ching's home page.

I am an associate professor at Joseph Rotman School of Management, University of Toronto.

My research Interests are: Quantitative Marketing, Industrial Organization, Applied Econometrics, and Healthcare Industries

Here is my C.V.

Research

· Dissertation

Dynamic Equilibrium in the U.S. Prescription Drug Market After Patent Expiration, Ph.D. dissertation, University of Minnesota, 2000.

· Recent Publications

“A Practitioner’s Guide to Bayesian Estimation of Discrete Choice Dynamic Programming Models” (with Susumu Imai, Masakazu Ishihara and Neelam Jain), forthcoming in Quantitative Marketing and Economics. The 2009 version is available here. The 2010 version is available here.

- Both C and Matlab code are available upon request.

- Presentation slides can be downloaded from here.

“Measuring the Informative and Persuasive Roles of Detailing on Prescribing Decisions,” (with Masakazu Ishihara), forthcoming in Management Science. The working paper version is available here.
“A Dynamic Oligopoly Structural Model for the Prescription Drug Market After Patent Expiration,” International Economic Review, vol. 51(4), pp.1175-1207, 2010. A winner of Young Economist Award sponsored by the European Economic Association. Presentation slides can be downloaded from here.
“Consumer Learning and Heterogeneity: Dynamics of Demand for Prescription Drugs After Patent Expiration,” International Journal of Industrial Organization, vol.28(6), pp.619-638, 2010.

- 2008 version (this version contains robustness check results which are left out in the IJIO published version)

- An older version can be downloaded from here.

“The Effects of Detailing on Prescribing Decisions under Quality Uncertainty,” (with Masakazu Ishihara) Quantitative Marketing and Economics, vol. 8(2), pp.123-165, June 2010 [lead article]. Honorable Mention of the Dick Wittink Prize. Working paper version is available here. Presentation slides.
“Payment Card Rewards Programs and Consumer Payment Choice,” (with Fumiko Hayashi) Journal of Banking and Finance, vol.34(8), pp.1773-1787, 2010. Working paper version is available here.
“Bayesian Estimation of Dynamic Discrete Choice Models,” (with Susumu Imai and Neelam Jain) Econometrica, vol. 77(6), pp.1865-1899, 2009. Presentation slides can be downloaded from here.
“Supplement to Bayesian Estimation of Dynamic Discrete Choice Models,” (with Susumu Imai and Neelam Jain) 65 pages, Econometrica, vol.77(6), Supplementary Material, November 2009, published at http://www.econometricsociety.org/ecta/supmat/5658_proofs.pdf.
“The Price Consideration Model of Brand Choice,” (with Tülin Erdem, Michael Keane) Journal of Applied Econometrics, vol.24(3), pp.393-420, 2009 (a special issue on New Econometric Models in Marketing edited by P. Chintagunta, P.H. Franses and R. Paap). Working paper version is available here.
“Challenges to Evidence-Based Prescribing in Clinical Practice,” (with Muhammad Mamdani, Brian Golden, Magda Melo, Ulrich Menzefricke), The Annals of Pharmacotherapy, vol.42(5), pp.704-707, 2008.
“Recent Advances in Structural Econometric Modeling: Dynamic, Product Positioning, and Entry,” (with J-P. Dube, K. Sudhir, G. Crawford, M. Draganska, J. Fox, W. Hartmann, G. Hitsch, B. Viard, M. Villas-Boas, and N. Vilcassim), Marketing Letters, vol. 16(3), pp.209-224, December, 2005.
“Understanding Firm, Physician and Consumer Choice Behavior in the Health Care Industry,” (with P. Manchanda, D. Wittink, P. Cleanthous, M. Ding, X.J. Dong, P. Leeflang, S. Misra, N. Mizik, S. Narayanan, T. Steenburgh, J.E. Wieringa, M. Wosinska, Y. Xie), Marketing Letters, vol. 16(3), pp.293-308, December, 2005.

· Working Papers

Learning Models: An Assessment of Progress, Challenges and New Developments (with Tülin Erdem and Michael Keane), preparing a revision for invited resubmission to Marketing Science.

The Effects of Publicity on Demand: The Case of Anti-cholesterol Drugs (with Ig Horstmann, Robert Clark and Hyunwoo Lim). Presentation slides.

How Much Do Consumers Know About the Quality of Products? Evidence from the Diaper Market (with Tülin Erdem and Michael Keane). Presentation slides.

Dynamics of Consumer Adoption of Financial Innovation: The Case of ATM Cards (with Botao Yang), preparing a revision for the 3^rd round review at Management Science.

Quantifying the Impacts of Limited Supply: The Case of Nursing Homes (with Fumiko Hayashi and Hui Wang)

Some Observations in the US Prescription Drug Market After Patent Expiration during the 80s

· Work-in-progress

A Dynamic Model of Consumer Learning and Forgetting (with Susumu Imai, Masakazu Ishihara and Neelam Jain)

Bayesian Estimation of Non-stationary Dynamic Discrete Choice Models (with Masakazu Ishihara)

Estimation of Discrete Choice Models using Pseudo-policy Function Approach – Some Monte Carlo Results (with Masakazu Ishihara and Yutec Sun)

· Invited Presentations

“Estimation of Discrete Choice Models with Strategic Interactions,” presented at 2008 ISMS Doctoral Consortium, Vancouver, BC, Canada, June 11, 2008.

“Recent Developments and Challenges of Single Agent Dynamic Models,” presented at 2009 ISMS Doctoral Consortium, University of Michigan, Ann Arbor, MI, June 3, 2009. New slides are here.

Discussion on “Constrained Optimization Approaches to Estimation of Structural Models” by Che-Lin Su and Kenneth L. Judd, at the Quantitative Marketing and Economics Conference, UCLA, Oct 22-23, 2010.

“Bayesian Estimation of Dynamic Discrete Choice Models and its applications”

· Media Coverage

Credit cards rewards plan may fuel debt: study, CBC News, July 20, 2009
Calculating the true cost of loyalty, Financial Post, July 25, 2009
Loyalty Program: Costs and Criticism, BNN interview, September 9, 2009
No, there is no such thing as free points, Toronto Star, October 1, 2009
Management Briefing: Credit card reward schemes, The Times Online, October 6, 2009
Interview at PYMNTS.com about Payment Rewards and Loyalty on April 26, 2010

Teaching

MGT 3055 Summer 2009 Econometrics Methods in Marketing