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Jeffrey S. Morris, PhD
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George S. Pepper Professor of Public Health and Preventive Medicine
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Director, Division of Biostatistics, Department of Biostatistics, Epidemiology and Informatics , University of Pennsylvania Perelman School of Medicine
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Department: Biostatistics and Epidemiology
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Contact information
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Department of Biostatistics, Epidemiology and Informatics
3b Center for Clinical Epidemiology and Biostatistics
40 University of Pennsylvania, Perelman School of Medicine
1a 600 Blockley Hall
3a 423 Guardian Drive
Philadelphia, PA 19104-6021
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3b Center for Clinical Epidemiology and Biostatistics
40 University of Pennsylvania, Perelman School of Medicine
1a 600 Blockley Hall
3a 423 Guardian Drive
Philadelphia, PA 19104-6021
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Office: 215-573-4824
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32 Fax: 215-573-4865
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Education:
21 7 BS 22 (Mathematics Education) c
28 Messiah College, 1993.
21 7 MS 17 (Statistics) c
2d Texas A&M University, 1997.
21 8 PhD 17 (Statistics) c
2d Texas A&M University, 2000.
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Permanent link21 7 BS 22 (Mathematics Education) c
28 Messiah College, 1993.
21 7 MS 17 (Statistics) c
2d Texas A&M University, 1997.
21 8 PhD 17 (Statistics) c
2d Texas A&M University, 2000.
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e8 Ren B, Morris JS, Barnett I: The Cox-Pólya-Gamma algorithm for flexible Bayesian inference of multilevel survival models. Biometrics 81(3): ujaf121, Jul 2025.
104 Morris JS: Morris responds to "Critical analyses concerning COVID-19 vaccines need to be consistently critical, and informed" American Journal of Epidemiology 194(4): 1145-1147, Apr 2025.
104 Morris JS: Tracking vaccine effectiveness in an evolving pandemic, countering misleading hot takes and epidemiologic fallacies. American Journal of Epidemiology 194(4): 898-907, Apr 2025.
196 Zhang D, Zhang B, Wu Q, Zhou T, Tong J, Lu Y, Chen J, Wang H, Chisolm DJ, Jhaveri R, Kenney RC, Rothman RL, Rao S, Williams DA, Hornig M, Wang L, Morris JS, Forrest CB, Chen Y: Racial/ethnic differences in post-acute sequelae of SARS-CoV-2 in children and adolescents in the United States. Nature Communications 16(1): 878, Jan 2025.
199 Desai N, Baladandayuthapani V, Shinohara RT, Morris JS: Covariance Assisted Multivariate Penalized Additive Regression (CoMPAdRe) Journal of Computational and Graphical Statistics: a joint publication of American Statistical Association, Institute of Mathematical Statistics, Interface Foundation of North America 34(2): 591-600, 2025.
c2 Desai N, Baladandayuthapani V, Shinohara RT, Morris JS: Connectivity Regression. Biostatistics 26 (1): kxaf002, Dec 2024.
201 Zhang HG, Honerlaw JP, Maripuri M, Samayamuthu MJ, Beaulieu-Jones BR, Baig HS, L'Yi S, Ho YL, Morris M, Panickan VA, Wang X, Weber GM, Liao KP, Visweswaran S, Tan BWQ, Yuan W, Gehlenborg N, Muralidhar S, Ramoni RB; Consortium for Clinical Characterization of COVID-19 by EHR (4CE); Kohane IS, Xia Z, Cho K, Cai T, Brat GA: Potential pitfalls in the use of real-world data for studying long COVID. Nature Medicine 29(5): 1040-1043, May 2023.
112 Flannery DD, Zevallos Barboza A, Wade KC, Pfeifer MR, Gerber JS, Morris JS, Puopolo KM: Measles Serostatus Among Parturient Patients at 2 Philadelphia Hospitals in 2021. JAMA 329(8): 682-684, Feb 2023.
f5 Huo S, Morris JS, Zhu H: Ultra-Fast Approximate Inference Using Variational Functional Mixed Models. Journal of Computational and Graphical Statistics 32(2): 353-365, 2023.
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Selected Publications
218 Zhang B, Wu Q, Jhaveri R, Zhou T, Becich MJ, Bisyuk Y, Blanceró F, Chrischilles EA, Chuang CH, Cowell LG, Fort D, Horowitz CR, Kim S, Ladino N, Liebovitz DM, Liu M, Mosa ASM, Schwenk HT, Suresh S, Taylor BW, Williams DA, Morris JS, Forrest CB, Chen Y: Long COVID associated with SARS-CoV-2 reinfection among children and adolescents in the omicron era (RECOVER-EHR): a retrospective cohort study. The Lancet Infectious diseases 25(S1473-3099): 00476-1, Sep 2025.e8 Ren B, Morris JS, Barnett I: The Cox-Pólya-Gamma algorithm for flexible Bayesian inference of multilevel survival models. Biometrics 81(3): ujaf121, Jul 2025.
104 Morris JS: Morris responds to "Critical analyses concerning COVID-19 vaccines need to be consistently critical, and informed" American Journal of Epidemiology 194(4): 1145-1147, Apr 2025.
104 Morris JS: Tracking vaccine effectiveness in an evolving pandemic, countering misleading hot takes and epidemiologic fallacies. American Journal of Epidemiology 194(4): 898-907, Apr 2025.
196 Zhang D, Zhang B, Wu Q, Zhou T, Tong J, Lu Y, Chen J, Wang H, Chisolm DJ, Jhaveri R, Kenney RC, Rothman RL, Rao S, Williams DA, Hornig M, Wang L, Morris JS, Forrest CB, Chen Y: Racial/ethnic differences in post-acute sequelae of SARS-CoV-2 in children and adolescents in the United States. Nature Communications 16(1): 878, Jan 2025.
199 Desai N, Baladandayuthapani V, Shinohara RT, Morris JS: Covariance Assisted Multivariate Penalized Additive Regression (CoMPAdRe) Journal of Computational and Graphical Statistics: a joint publication of American Statistical Association, Institute of Mathematical Statistics, Interface Foundation of North America 34(2): 591-600, 2025.
c2 Desai N, Baladandayuthapani V, Shinohara RT, Morris JS: Connectivity Regression. Biostatistics 26 (1): kxaf002, Dec 2024.
201 Zhang HG, Honerlaw JP, Maripuri M, Samayamuthu MJ, Beaulieu-Jones BR, Baig HS, L'Yi S, Ho YL, Morris M, Panickan VA, Wang X, Weber GM, Liao KP, Visweswaran S, Tan BWQ, Yuan W, Gehlenborg N, Muralidhar S, Ramoni RB; Consortium for Clinical Characterization of COVID-19 by EHR (4CE); Kohane IS, Xia Z, Cho K, Cai T, Brat GA: Potential pitfalls in the use of real-world data for studying long COVID. Nature Medicine 29(5): 1040-1043, May 2023.
112 Flannery DD, Zevallos Barboza A, Wade KC, Pfeifer MR, Gerber JS, Morris JS, Puopolo KM: Measles Serostatus Among Parturient Patients at 2 Philadelphia Hospitals in 2021. JAMA 329(8): 682-684, Feb 2023.
f5 Huo S, Morris JS, Zhu H: Ultra-Fast Approximate Inference Using Variational Functional Mixed Models. Journal of Computational and Graphical Statistics 32(2): 353-365, 2023.
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