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Biostatistics
Purushottam Laud, PhD

Purushottam W. Laud, PhD

Professor, Biostatistics

Locations

  • Biostatistics

Contact Information

Biography

Professor Laud joined the Division of Biostatistics in the spring of 1994. He was previously in the Department of Mathematical Sciences at Northern Illinois University. His methodological research has spanned many areas of Bayesian statistics: nonparametric models for survival analysis, model selection in linear and generalized linear models, computational methods, semi-parametric models for instrumental variables regression with binary and time-to-event outcomes.

He has several collaborative relationships with researchers at the College, particularly with those in the College's Comprehensive Injury Center (CIC), the Center for Advancing Population Science (CAPS), and the Cardiovascular Research Center. Projects include falls injury prevention, relationship of obesity and motor vehicle crash fatalities, breast cancer screening and surveillance, genetic mechanisms of hypertension development in salt sensitive rats, and many others. The projects involve both experimental and observational studies.

Research Experience

  • Bayesian Statistical Methodology

Leadership Positions

  • Acting Director, Division of Biostatistics 09/2013 - 03/2015
  • Faculty Biostatistician in the Center for Patient Care and Outcomes Research. Biostatistics Graduate Committee Chair.

Research Interests

Dr. Laud, Professor of Biostatistics, has extensive experience in design and analysis of scientific studies in medicine, especially using large administrative databases such as SEER-Medicare linked data and Medicare billing records.

Over the past decade and a half, he has served as lead biostatistician on numerous funded research projects with investigators both within CAPS and more broadly throughout the College. Research areas have included breast cancer surveillance and survivorship, cancer prevention, bone health, cervical spine surgery outcomes, obesity and motor vehicle injury, management of diabetes and hypertension, effect of discontinuity of care on hospitalized patients, prevention of falls in the elderly, and molecular and functional regulatory networks in hypertension. His research in statistical methodology generally takes the Bayesian approach to inference, and has been published in leading statistical journals. Dr. Laud’s vast research experience includes linear and generalized linear models, model selection, Markov chain Monte Carlo, time to event data, subgroup analysis in clinical trials, Bayesian nonparametrics, and instrumental variables models for observational data in comparative effectiveness studies.

Publications

  • (Bickell NA, Nattinger AB, McGinley EL, Schymura MJ, Laud PW, Pezzin LE.) J Clin Oncol. 2025 Jan;43(1):57-64 PMID: 39348624 PMCID: PMC11663124 09/30/2024

  • (Spellman SR, Sparapani R, Maiers M, Shaw BE, Laud P, Bupp C, He M, Devine SM, Logan BR.) Blood Adv. 2024 Dec 10;8(23):6082-6087 PMID: 39368807 PMCID: PMC11652765 SCOPUS ID: 2-s2.0-85212173730 10/06/2024

  • (Rademacher N, Zhou Y, McGinley EL, Laud PW, Yen TWF, Ponce SB, Nattinger AB, Beyer KMM.) Cancer Med. 2024 Jul;13(14):e7397 PMID: 39030995 PMCID: PMC11258551 SCOPUS ID: 2-s2.0-85199018217 07/20/2024

  • (Sparapani RA, Maiers M, Spellman SR, Shaw BE, Laud PW, Devine SM, Logan BR.) medRxiv. 2024 May 09 PMID: 38766030 PMCID: PMC11100939 05/20/2024

  • (Sparapani RA, Logan BR, Maiers MJ, Laud PW, McCulloch RE.) Biometrics. 2023 Dec;79(4):3023-3037 PMID: 36932826 PMCID: PMC10505620 SCOPUS ID: 2-s2.0-85153305626 03/19/2023

  • (Singh S, Laud PW, Crotty BH, Nanchal RS, Hanson R, Penlesky AC, Fletcher KE, Stadler ME, Dong Y, Nattinger AB.) Am J Med Qual. 2023 Sep-Oct 01;38(5):229-237 PMID: 37678301 SCOPUS ID: 2-s2.0-85170151971 09/08/2023

  • (Canales B, Laud PW, Tarima S, Zhou Y, Bikomeye JC, McGinley EL, Yen TWF, Bemanian A, Beyer KMM.) Health Place. 2023 Sep;83:103090 PMID: 37531804 PMCID: PMC10528833 SCOPUS ID: 2-s2.0-85166298261 08/03/2023

  • (Nattinger AB, Bickell NA, Schymura MJ, Laud P, McGinley EL, Fergestrom N, Pezzin LE.) J Clin Oncol. 2023 Apr 10;41(11):2067-2075 PMID: 36603178 PMCID: PMC10419674 SCOPUS ID: 2-s2.0-85152169276 01/06/2023

  • (Neuner JM, Fergestrom N, Pezzin LE, Laud PW, Ruddy KJ, Winn AN.) Breast Cancer Res Treat. 2023 Jan;197(1):223-233 PMID: 36357711 SCOPUS ID: 2-s2.0-85141681578 11/11/2022

  • (Morris RS, Figueroa JF, Pokrzywa CJ, Barber JK, Temkin NR, Bergner C, Karam BS, Murphy P, Nelson LD, Laud P, Cooper Z, de Moya M, Trevino C, Tignanelli CJ, deRoon-Cassini TA.) Am J Surg. 2022 Oct;224(4):1150-1155 PMID: 35637020 SCOPUS ID: 2-s2.0-85130979709 06/01/2022

  • (Crotty BH, Dong Y, Laud P, Hanson RJ, Gershkowitz B, Penlesky AC, Shah N, Anderes M, Green E, Fickel K, Singh S, Somai MM.) JAMA Netw Open. 2022 Jul 01;5(7):e2221050 PMID: 35797044 PMCID: PMC9264036 SCOPUS ID: 2-s2.0-85133959055 07/08/2022

  • (Namin S, Zhou Y, Xu W, McGinley E, Jankowski C, Laud P, Beyer K.) J Race Ethn City. 2022;3(1):70-94 PMID: 35992214 PMCID: PMC9387904 SCOPUS ID: 2-s2.0-85163991271 08/23/2022

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