Alisa J. Stephens Shields
Associate Professor of Biostatistics in Biostatistics and Epidemiology at the Hospital of the University of Pennsylvania
Senior Scholar, Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania
Member, Graduate Group in Epidemiology and Biostatistics, University of Pennsylvania
Director, Biostatistics and Data Science Core, Penn Center for AIDS Research (CFAR),
Perelman School of Medicine, University of Pennsylvania
Department: Biostatistics and Epidemiology
Graduate Group Affiliations
Contact information
Department of Biostatistics, Epidemiology and Informatics
Center for Clinical Epidemiology and Biostatistics
University of Pennsylvania, Perelman School of Medicine
628 Blockley Hall
423 Guardian Drive
Philadelphia, PA 19104-6021
Center for Clinical Epidemiology and Biostatistics
University of Pennsylvania, Perelman School of Medicine
628 Blockley Hall
423 Guardian Drive
Philadelphia, PA 19104-6021
Office: 215-898-1606
Fax: 215-573-4865
Fax: 215-573-4865
Education:
B.S. (Mathematics with Spanish minor)
University of Maryland, 2006.
A.M. (Biostatistics)
Harvard University, 2009.
Ph.D. (Biostatistics)
Harvard University, 2012.
Permanent linkB.S. (Mathematics with Spanish minor)
University of Maryland, 2006.
A.M. (Biostatistics)
Harvard University, 2009.
Ph.D. (Biostatistics)
Harvard University, 2012.
Description of Itmat Expertise
clinical trials, longitudinal and clustered data analysis, causal inferenceDescription of Research Expertise
Dr. Stephens' research interests include clinical trials, in particular cluster-randomized trials, longitudinal data analysis, and causal inference with an emphasis on semiparametric methods. Her current collaborations include the Testosterone Trials, the Multidisciplinary Approach to Pelvic Pain Network and several projects in the prevention and treatment of HIV.Selected Publications
Krieger JN, Stephens AJ, Landis JR, Andriole G, Clemens JQ, Kreder K, Lai H, Mackey S, Rodriquez L, Schaeffer A, Williams D: Relationship between chronic nonurological associated somatic syndromes and symptom severity in urological chronic pelvic pain syndromes: baseline evaluation of the MAPP study. Journal of Urology 193(4): 1254-62, Apr 2015.Garland SN, Carlson LE, Stephens AJ, Antle MC, Samuels C, Campbell TS: Mindfulness-based stress reduction compared to cognitive-behavioral therapy for the treatment of insomnia comorbid with cancer: a randomized, partially blinded, noninferiority trial. Journal of Clinical Oncology 32(5): 449-457, Feb 2014.
Stephens AJ, Tchetgen Tchetgen EJ, De Gruttola V: Locally efficient estimation of marginal treatment effects when outcomes are correlated: Is the prize worth the chase? International Journal of Biostatistics 10(1): 59-75, May 2014.
Cunningham GR, Rosen RC, Wang C, Stephens AJ, Ellenberg SS, Matsumoto A, Bhasin S, Molitch M, Farrar JT, Cella D, Barrett-Connor E, Cauley J, Cifelli D, Crandall JP, Ensrud KE, Fluharty L, Lewis CE, Pahor M, Resnick SM, Swerdloff RS, Snyder PJ: Free testosterone and total testosterone but not estradiol or sex hormone-binding globulin are associated with sexual function in symptomatic older hypogonadal men in The Sexual Function Trial of The Testosterone Trials. International Society of Endocrinology/Endocrine Society Annual Meeting, Chicago, IL Jun 2014.
Nickel JC, Stephens AJ, Chen J, Landis JR, Mullins C, Ehrlich GD, MAPP Research Network: Search for Microorganisms in Men with Urologic Chronic Pelvic Pain Syndrome: A Culture-Independent Analysis of Cases and Controls Enrolled in the trans-MAPP Epidemiology/Phenotyping (EP) Study. Poster Presentation at the American Urological Association Annual Meeting, Orlando, FL May 2014.
Yehia BR, Stephens AJ, Agwu AL, Berry SA, Gebo KA, Metlay J: The HIV Treatment Cascade: Is There More to the Story? Poster Presentation at the Conference on Retroviruses and Opportunistic Infections, Boston, MA(564), Mar 2014.
Stephens AJ, Tchetgen Tchetgen EJ, DeGruttola V: Flexible covariate-adjusted exact tests of randomized treatment effects with application to a trial of HIV education. Annals of Applied Statistics 7(4): 2106-2137, Dec 2013.
Rodriguez L, Stephens AJ, Clemens JQ, Yang C, Buchwald D, Lai HH, and the MAPP Research Network: Impact of Symptom Duration on Baseline Characteristics of the Multidisciplinary Approach to Pelvic Pain (MAPP) Study Cohort. Oral Presentation at the American Urological Association Annual Meeting, San Diego, CA May 2013.
Stephens AJ, Keele J, Joffe M: Effect Modification by Post-Treatment Variables in Mental Health Research. Oral Presentation at the ENAR Spring Meeting, Orlando, FL Mar 2013.
Stephens AJ, Tchetgen Tchetgen EJ, De Gruttola V: Locally Efficient Estimation of Marginal Treatment Effects Using Auxiliary Covariates in Randomized Trials with Multivariate Outcomes. Oral Presentation at the 8th World Congress in Probability and Statistics, Istanbul, Turkey Jul 2012.