"Estimated Income and Price Elasticities of Demand for Hospital Care Free of Quality Bias," (with S. Atri). Economics Letters, 1984, 387-392.

"Quality Change and the Demand for Hospital Care: An Econometric Re-examination," Atlantic Economic Journal (with S. Atri), December 1986, 15-23.

"A Panel Data Analysis of Productive Efficiency in Freestanding Health Clinics," (with S. C.  Johnson). Empirical Economics (Special issue on Panel Data). January 1992, 141-151. Reprinted in Panel Data Analysis (eds. B. Raj and B. Baltagi), Physica-Verlag, 1992.

"Socioeconomic Factors and the Odds of Vaginal Birth after Cesarean Section," (with D. King). JAMA-The Journal of the American Medical Association, August 1994, 524-529.

"Modeling SSA's Sequential Disability Determination Process Using Matched SIPP Data," (with D.R. Vaughan and B. Wixon). Social Security Bulletin, Vol. 58, Winter 1995, 3-42.

"The Effect of Smoking on Health Using Sequential Self-Selection Model," (with Jae Song). Health Economics, 2000, 491-511.  Reprinted in Econometric Analysis of Health Data (eds. A. Jones and O. O’Donnell, Chapter 4, pp. 51-69, John Wiley and Sons, Chichester, UK.

"A Structural Model of Social Security's Disability Determination Process," with J. Hu, D. R. Vaughan and B. Wixon), Review of Economics and Statistics, (May 2001), 348-361.

"An Econometric Analysis of Veterans' Health Care Utilization Using Two-Part  Models," (with G. Xing). Empirical Economics. Vol. 29, 431-449, 2004.

“Modeling Medicare-Eligible Veterans’ Demand for Outpatient Services: A Two-Stage Approach,” (with G. Xing). Health Services and Outcomes Research Methodology, 4, 2004, 221-240.  

"Income Related Health Disparity and Its Determinants in New York State: Racial/Ethnic and Geographical Comparisons" (with Z. Pulungan). In Toward Equity in Health: A New Global Approach to Inequities in Health, (Ed. Barbara Wallace), Springer, 2007, pp. 97-127.

“A Model of Social Security Disability Insurance Using Matched SIPP/Administrative Data”,(with J. Song and B. Wixon), Journal of Econometrics, 145, 2008, 4-20.

“Racial/Ethnic and Education-Related Disparities in Control of Risk Factors for Cardiovascular Disease among Individuals with Diabetes” (with P. Chatterji and H. Joo), Diabetes Care, 35 (1), 2012, 305-312.

“The dynamics of income-related health inequality among US children”, (with P. Chatterji and J. Song), Health Economics, 2012.

“Beware of being unaware: Racial/ethnic disparities in chronic illness in the U.S.” (with P. Chatterji and H.S. Joo), Health Economics. 2012 (Vol. 21), 1040-1060.

“Identifying the Mechanisms for Workplace Burden of Psychiatric Illness” (with S. Banerjee and P. Chatterji). Medical Care, 2013, 52 (2), pp. 112-120.

“Birthweight and Academic Achievement in Childhood”, (with P. Chatterji, and D. Kim), Health Economics, 23 (9), 1013-1035, 2014.

"Fetal Growth and Neurobehavioral Outcomes in Childhood" (with P. Chatterji and D. Kim), Economics and Human Biology, Vol. 15, December 2014, 187-200.

“Examining the Education Gradient in Chronic Illness” (with P. Chatterji and H. S. Joo), Forthcoming in Education Economics. DOI:10.1080/09645292.2014.944858.

“Effects of Psychiatric Disorders on Labor Market Outcomes: A Latent Variable Approach Using Multiple Clinical Indicators” (with S. Banerjee and P. Chatterji). Forthcoming in Health Economics.