Luke J. Keele, PhD

faculty photo
Research Associate Professor of Statistics in Surgery
Department: Surgery

Contact information
Department of Surgery
Perelman School of Medicine, University of Pennsylvania
3400 Spruce Street, 4 Silverstein
Philadelphia, PA 19104
BA (Political Science)
Calvin College, Grand Rapids, MI, 1997.
MA (Political Science)
University of North Carolina, Chapel Hill, NC, 2000.
PhD (Political Science)
University of North Carolina, Chapel Hill, NC, 2003.
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Selected Publications

Keele L, Lenard M, Page L: Overlap violations in clustered observational studies of educational interventions. Journal of Research on Educational Effectiveness 2024 (in press).

Ye T, Westling T, Page L, Keele L, Small D, Grieve R: Nonparametric identification of causal effects in clustered observational studies with differential selection. Journal of the Royal Statistical Society, Series A 2024 (in press).

Jog A, Strauss Starling AL, Kaur I, Um K, Keele LJ, Triggs JR, Altieri MS, Shao JM: Paraesophageal hernia recurrence following repair: Making the case for reoperative surgery in a propensity-matched cohort. Surgical Endoscopy 38(6): 3138-3144, June 2024 Notes: Epub Apr. 16, 2024.

Michel K, Slinger M, Talwar R, Stambakio H, Chang S, Luckenbaugh A, Malkowicz SB, Guzzo T, Keele L, Bivalacqua T: Comparison of apixaban versus enoxaparin for VTE prevention after radical cystectomy: The CARE Trial. Journal of Urology 211(5 Suppl 2): e19-e20, May 2024 Notes: Presented at the American Urological Association's Annual Meeting, AUA 2024, San Antonio, TX, May 2024.

Ben-Michael E, Page L, Keele L: Approximate balancing weights for clustered observational study designs. Statistics in Medicine 43(12): 2332-2358, May 30 2024 Notes: Epub Apr. 1, 2024.

Kaufman EJ, Wirtalla CJ, Keele LJ, Neuman MD, Rosen CB, Syvyk S, Hatchimonji J, Ginzberg S, Friedman A, Roberts SE, Kelz RR: Costs of care for operative and non-operative management of emergency general surgery conditions. Annals of Surgery 279(4): 684-691, Apr. 1 2024 Notes: Epub Oct. 19, 2023.

Ginzberg SP, Wirtalla CJ, Keele LJ, Wachtel H, Kaufman EJ, Kelz RR: An acute care surgeon's dilemma: Operative vs. non-operative management of emergency general surgery conditions in patients with recent colorectal cancer treatment. American Journal of Surgery 227: 15-21, Jan. 2024 Notes: Epub Sept. 12, 2023.

Ye T, Keele L, Hasegawa R, Small D: A negative correlation strategy for bracketing in difference-in-differences. Journal of the American Statistical Association Aug. 20 2023 (Epub) Notes:

Ma KL, Sharon CE, Tortorello GN, Keele L, Lukens JN, Karakousis GC, Miura JT: Delayed time to radiation and overall survival in Merkel cell carcinoma. Journal of Surgical Oncology 128(8): 1385-1393, Dec. 2023 Notes: Epub Aug. 25, 2023.

Moneme AN, Wirtalla CJ, Roberts SE, Keele LJ, Kelz RR: Primary care physician follow-up and 30-day readmission after emergency general surgery admissions. JAMA Surgery 158(12): 1293-1301, Dec. 1 2023.

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Last updated: 06/18/2024
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