Faculty Positions

Research Interests

Dr. Troxel is Professor of Biostatistics in the Department of Biostatistics and Epidemiology and a Senior Scholar in the CCEB.  She has over fifteen years of experience in the design, conduct, and analysis of all phases of clinical studies, including both early-phase and randomized clinical trials, as well as laboratory investigations and population-based research; these projects have studied a wide range of medical issues, with major emphases on oncology and behavioral medicine.  She has served as the lead statistician on numerous studies of financial incentives.  In addition, Dr. Troxel has conducted methodological research in the areas of longitudinal measures and incomplete data, and has developed new methods that are applicable to problems with nonignorable missing data and complex patterns of missingness.  Recent work has focused on sensitivity analyses for missing data that are applicable to repeated measures data and include extensions for binary outcomes as well as continuous outcomes. She is a reviewer for numerous medical and statistical journals, serves regularly on NIH peer-review panels, and is an Associate Editor of Statistics in Medicine, a premiere journal in applied biomedical statistics.

Selected Publications

Volpp KG, Loewenstein G, Troxel AB, Doshi J, Price M, Laskin M, Kimmel SE. A test of financial incentives to improve warfarin adherence.  BMC Health Services Research. 2008; 8: 272.

Volpp KG, John LK, Troxel AB, Norton L, Fassbender J, Loewenstein G. Financial incentive-based approaches for weight loss: A randomized trial. JAMA. 2008; 300: 2631-2637.

Volpp KG, Troxel AB, Pauly MV, Glick HA, Puig A, Asch DA, Galvin R, Zhu J, Wan F, DeGuzman J, Corbett E, Weiner J, Audrain-McGovern J.  A randomized, controlled trial of financial incentives for smoking cessation.  NEJM. 2009; 360: 699-709.

John LK, Loewenstein G, Troxel AB, Norton L, Fassbender JE, Volpp KG. Financial incentives for extended weight loss: A randomized controlled trial. Journal of General Internal Medicine. 2011; 26(6): 621-6.

Wan J, Abuabara K, Shin DB, Troxel AB, Bebo BF, Gelfand JM.  Dermatologist response rates to a mailed questionnaire:  A randomized trial of monetary incentives.  Journal of the American Academy of Dermatology. 2012; 66(1): e18-20.

Troxel AB, Volpp KG. Effectiveness of financial incentives for longer-term smoking cessation: Evidence of absence or absence of evidence? American Journal of Health Promotion. 2012; 26(4): 204-7.

Kimmel SE, Troxel AB, Loewenstein G, Brensinger CM, Jaskowiak J, Doshi JA, Laskin M Volpp K.  Randomized trial of lottery-based incentives to improve warfarin adherence.  American Heart Journal.  2012; 164(2): 268-74.

Kullgren JT, Troxel AB, Loewenstein G, Asch DA, Norton LA, Wesby L, Tao Y, Zhu J, Volpp KG.  Individual-versus group-based financial incentives for weight loss: A randomized, controlled trial. Annals of Internal Medicine. 2013; 158(7): 505-14.

Volpp KG, Terwiesch C, Troxel AB, Mehta S, Asch DA. Making the RCT more useful for innovation with evidence-based evolutionary testing. Healthcare. 2013; 1(1): 4-7.

Blumenthal KJ, Saulsgiver KA, Norton L, Troxel AB, Anarella JP, Gesten FC, Chernew ME, Volpp KG. Medicaid incentive programs to encourage healthy behavior show mixed results to date and should be studied and improved. Health Affairs. 2013; 32(3): 497-507.

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