Education: 

                   B.S.  Physics,  South China Normal University, China
                   M.B.A.  Finance, University of St. Thomas, Houston
                   M.S.  Biometry,  School of Public Health, University of Texas,
                   Houston.

                   Ph.D.  Biometry,  School of Public Health, University of Texas, Houston.

Research Activities:

 Cancer surveillance and control

Analysis of Medicare claims data

Non-parametric methods and its application

Economic analysis of health care

Data mining and using of large health care data

bibliography:

Guidry, JJ, Aday, LA, Zhang, DD, Winn, RJ. 1997.  The Role of Informal and formal Social Support Networks for Patients with Cancer.  Cancer Practice,  5:4, 241-246.

Guidry, JJ, Aday, LA, Zhang, DD, Winn, RJ. 1997.  Transportation as a Barrier to Cancer Treatment.  Cancer Practice,  5:6, 361-366.

Satish, S, Markides, KS, Zhang, D, Goodwin, JS. 1997.  Factors Influencing Unawareness of Hypertension among Older Mexican Americans, Preventive Medicine,  26, 645-650.

Guidry, JJ, Aday, LA, Winn, RJ, Zhang, DD. 1998.  Information Sources and Barriers to Cancer Treatment by Racial/Ethnic Minority Status of Patients, Journal of Cancer Education,  13:1, 43-48.

Carlson, JE, Zocchi, KA, Barris, ML, Bettencourt, DM, Gambrel, ML, Zhang, D, Freeman, J, Goodwin, JS. 1998.  Measuring Fragility in the Hospitalized Elderly,  Am. J. Phys. Med. Rehabil.,  7:3, 252-257.

Freeman, JM, Zhang, DD, Freeman, DH, Goodwin JS. 2000.  An Approach to Identifying Breast Cancer Cases Using Medicare Claims Data., Journal of Clinical Epidemiology, 53, 605-614.

Xianglin Du, Jean L. Freeman, Joan L. Warren, Ann B. Nattinger, Dong Zhang, James S. Goodwin. 2000. Accuracy and completeness of Medicare claims data for surgical treatment of breast cancer.  Medical Care, 38:7, 719-727.

Satish, S, Zhang, D, Goodwin, JS. 2001.  Clinical significance of falling blood pressure among older adults. Journal of Clinical Epidemiology, 54, 961-967.

MacGregor, JM, Freeman, DH, Zhang, D. 2001. The Traffic Sign Recognition Test Can Discriminate Between Older Drivers Who Have and Have Not Had a Motor Vehicle Crash.  JAGS, 49, 466-469.

Zhang, DD, Zhou, XH, Freeman, JM, Freeman, DH. 2002. A Non-parametric Method on the Comparison of Partial Areas Under ROC Curves and its Application on Large Data Sets. Statistics in Medicine, 21:5, 701-715.

Freeman JL, Goodwin, JS, Zhang, D, Nattinger AB, Freeman, DH. 2003.  Measuring the performance of Screening Mammography in Community Practice with Medicare Claims Data.  Women & Health, 37:2, 1-15.

Goodwin, JS, Zhang, D. 2003.  Impact of Depression on Diagnosis, Treatment and Survival of Older Women with Breast Cancer.  (in press).