Medical College of Wisconsin
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Purushottam W. Laud PhD

Purushottam W. Laud PhD

Professor

Institution: Medical College of Wisconsin
Department: Institute for Health and Society
Division: Biostatistics
Program: Research


Research Experience

  • Bayesian Statistical Methodology
  • Leadership Positions

  • Faculty Biostatistician in the Center for Patient Care and Outcomes Research.
    Biostatistics Graduate Committee Chair.
  • Acting Director, Division of Biostatistics
  • Publications

  • CHARACTERIZATION OF BIOLOGICAL PATHWAYS ASSOCIATED WITH A 1.37 MBP GENOMIC REGION PROTECTIVE OF HYPERTENSION IN DAHL S RATS. (Cowley AW Jr, Moreno C, Jacob HJ, Peterson CB, Stingo FC, Ahn KW, Liu P, Vannucci M, Laud PW, Reddy P, Lazar J, Evans L, Yang C, Kurth T, Liang M) Physiol Genomics 2014 Apr 8: PMID 24714719
  • Surgeon specialization and use of sentinel lymph node biopsy for breast cancer. (Yen TW, Laud PW, Sparapani RA, Nattinger AB) JAMA Surg 2014 Feb;149(2):185-92 PMID 24369337
  • Changes in nasal airflow and heat transfer correlate with symptom improvement after surgery for nasal obstruction. (Kimbell JS, Frank DO, Laud P, Garcia GJ, Rhee JS) J Biomech 2013 Oct 18;46(15):2634-43 PMID 24063885
  • Characteristics of the residential neighborhood environment differentiate intimate partner femicide in urban versus rural settings. (Beyer KM, Layde PM, Hamberger LK, Laud PW) J Rural Health 2013 Jun;29(3):281-93 PMID 23802930
  • Increased proliferative cells in the medullary thick ascending limb of the loop of Henle in the Dahl salt-sensitive rat. (Yang C, Stingo FC, Ahn KW, Liu P, Vannucci M, Laud PW, Skelton M, O'Connor P, Kurth T, Ryan RP, Moreno C, Tsaih SW, Patone G, Hummel O, Jacob HJ, Liang M, Cowley AW Jr) Hypertension 2013 Jan;61(1):208-15 PMID 23184381
  • A computational study of injury severity and pattern sustained by overweight drivers in frontal motor vehicle crashes. (Kim JE, Kim IH, Shum PC, Shih AM, Pintar F, Shen W, Ma X, Laud PW, Heymsfield SB, Allison DB, Zhu S) Comput Methods Biomech Biomed Engin 2014 Jul;17(9):965-77 PMID 23113549
  • Thirty-day readmissions after elective spine surgery for degenerative conditions among US Medicare beneficiaries. (Wang MC, Shivakoti M, Sparapani RA, Guo C, Laud PW, Nattinger AB) Spine J 2012 Oct;12(10):902-11 PMID 23098615
  • Socioeconomic and racial differences in treatment for breast cancer at a low-volume hospital. (Kong AL, Yen TW, Pezzin LE, Miao H, Sparapani RA, Laud PW, Nattinger AB) Ann Surg Oncol 2011 Oct;18(11):3220-7 PMID 21861226
  • Utility of a combined current procedural terminology and International Classification of Diseases, Ninth Revision, Clinical Modification code algorithm in classifying cervical spine surgery for degenerative changes. (Wang MC, Laud PW, Macias M, Nattinger AB) Spine (Phila Pa 1976) 2011 Oct 15;36(22):1843-8 PMID 21245779
  • A Bayesian subgroup analysis with a zero-enriched Polya Urn scheme. (Sivaganesan S, Laud PW, Müller P) Stat Med 2011 Feb 20;30(4):312-23 PMID 21225894
  • Obesity and non-fatal motor vehicle crash injuries: sex difference effects. (Ma X, Laud PW, Pintar F, Kim JE, Shih A, Shen W, Heymsfield SB, Allison DB, Zhu S) Int J Obes (Lond) 2011 Sep;35(9):1216-24 PMID 21224830
  • Patient risk factors for medical injury: a case-control study. (Marbella AM, Laud PW, Brasel KJ, Layde PM) BMJ Qual Saf 2011 Feb;20(2):187-93 PMID 21209151
  • Fracture risk and adjuvant hormonal therapy among a population-based cohort of older female breast cancer patients. (Neuner JM, Yen TW, Sparapani RA, Laud PW, Nattinger AB) Osteoporos Int 2011 Nov;22(11):2847-55 PMID 21170643
  • Effects of tissue preservation temperature on high strain-rate material properties of brain. (Zhang J, Yoganandan N, Pintar FA, Guan Y, Shender B, Paskoff G, Laud P) J Biomech 2011 Feb 3;44(3):391-6 PMID 21055756
  • A Bayesian subgroup analysis with a zero-enriched Polya Urn scheme. (Sivaganesan S et al.) Stat Med 2011 Feb 20;30(4):312-23 PMID 21058368
  • Strengths and limitations of International Classification of Disease Ninth Revision Clinical Modification codes in defining cervical spine surgery. (Wang MC, Laud PW, Macias M, Nattinger AB) Spine (Phila Pa 1976) 2011 Jan 1;36(1):E38-44 PMID 20975624
  • Socioeconomic factors associated with adjuvant hormone therapy use in older breast cancer survivors. (Yen TW, Czypinski LK, Sparapani RA, Guo C, Laud PW, Pezzin LE, Nattinger AB) Cancer 2011 Jan 15;117(2):398-405 PMID 20824718
  • Heightened attention to medical privacy: challenges for unbiased sample recruitment and a possible solution. (Nattinger AB, Pezzin LE, Sparapani RA, Neuner JM, King TK, Laud PW) Am J Epidemiol 2010 Sep 15;172(6):637-44 PMID 20660123
  • The relationship of health numeracy to cancer screening. (Schapira MM, Neuner J, Fletcher KE, Gilligan MA, Hayes E, Laud P) J Cancer Educ 2011 Mar;26(1):103-10 PMID 20577913
  • Severe-to-fatal head injuries in motor vehicle impacts. (Yoganandan N, Baisden JL, Maiman DJ, Gennarelli TA, Guan Y, Pintar FA, Laud P, Ridella SA) Accid Anal Prev 2010 Jul;42(4):1370-8 PMID 20441854
  • Elderly breast cancer survivors accurately self-report key treatment information. (Yen TW, Sparapani RA, Guo C, Neuner JM, Laud PW, Nattinger AB) J Am Geriatr Soc 2010 Feb;58(2):410-2 PMID 20370882
  • BMI and risk of serious upper body injury following motor vehicle crashes: concordance of real-world and computer-simulated observations. (Zhu S, Kim JE, Ma X, Shih A, Laud PW, Pintar F, Shen W, Heymsfield SB, Allison DB) PLoS Med 2010 Mar;7(3):e1000250 PMID 20361024
  • Graduated driver licensing policy in the Great Lakes states: current benefits and future potential. (Corden TE, Tonellato DJ, Frisch KB, Laud PW) WMJ 2009 Nov;108(8):393-7 PMID 20041576
  • Patient satisfaction with physician-patient communication during telemedicine. (Agha Z, Schapira RM, Laud PW, McNutt G, Roter DL) Telemed J E Health 2009 Nov;15(9):830-9 PMID 19919189
  • Apoptosis of CD4+ CD25(high) T cells in type 1 diabetes may be partially mediated by IL-2 deprivation. (Jailwala P, Waukau J, Glisic S, Jana S, Ehlenbach S, Hessner M, Alemzadeh R, Matsuyama S, Laud P, Wang X, Ghosh S) PLoS One 2009;4(8):e6527 PMID 19654878
  • A contemporary, population-based study of lymphedema risk factors in older women with breast cancer. (Yen TW, Fan X, Sparapani R, Laud PW, Walker AP, Nattinger AB) Ann Surg Oncol 2009 Apr;16(4):979-88 PMID 19194754
  • A framework for health numeracy: how patients use quantitative skills in health care. (Schapira MM, Fletcher KE, Gilligan MA, King TK, Laud PW, Matthews BA, Neuner JM, Hayes E) J Health Commun 2008 Jul-Aug;13(5):501-17 PMID 18661390
  • Exploring the surgeon volume outcome relationship among women with breast cancer. (Nattinger AB, Laud PW, Sparapani RA, Zhang X, Neuner JM, Gilligan MA) Arch Intern Med 2007 Oct 8;167(18):1958-63 PMID 17923595
  • A randomized study of the effect of 5-year and lifetime hip fracture risk information on physician recommendations for management of low bone density. (Neuner JM, Laud PW, Schapira MM) J Clin Densitom 2007 Oct-Dec;10(4):370-5 PMID 17888700
  • Racial and socioeconomic disparities in bone density testing before and after hip fracture. (Neuner JM, Zhang X, Sparapani R, Laud PW, Nattinger AB) J Gen Intern Med 2007 Sep;22(9):1239-45 PMID 17594131
  • Disparities in colon cancer screening in the Medicare population. (Ananthakrishnan AN, Schellhase KG, Sparapani RA, Laud PW, Neuner JM) Arch Intern Med 2007 Feb 12;167(3):258-64 PMID 17296881
  • Relationship between number of breast cancer operations performed and 5-year survival after treatment for early-stage breast cancer. (Gilligan MA, Neuner J, Zhang X, Sparapani R, Laud PW, Nattinger AB) Am J Public Health 2007 Mar;97(3):539-44 PMID 17267725
  • Surgeon characteristics and variations in treatment for early-stage breast cancer. (Gilligan MA, Neuner J, Sparapani R, Laud PW, Nattinger AB) Arch Surg 2007 Jan;142(1):17-22 PMID 17224496
  • Moment-rotation responses of the human lumbosacral spinal column. (Guan Y, Yoganandan N, Moore J, Pintar FA, Zhang J, Maiman DJ, Laud P) J Biomech 2007;40(9):1975-80 PMID 17101141
  • Sex differences in outcomes of sinus surgery. (Mendolia-Loffredo S, Laud PW, Sparapani R, Loehrl TA, Smith TL) Laryngoscope 2006 Jul;116(7):1199-203 PMID 16826060
  • Trabecular bone density of male human cervical and lumbar vertebrae. (Yoganandan N, Pintar FA, Stemper BD, Baisden JL, Aktay R, Shender BS, Paskoff G, Laud P) Bone 2006 Aug;39(2):336-44 PMID 16580272
  • Bone density testing in older women and its association with patient age. (Neuner JM, Binkley N, Sparapani RA, Laud PW, Nattinger AB) J Am Geriatr Soc 2006 Mar;54(3):485-9 PMID 16551317
  • Obesity and risk for death due to motor vehicle crashes. (Zhu S, Layde PM, Guse CE, Laud PW, Pintar F, Nirula R, Hargarten S) Am J Public Health 2006 Apr;96(4):734-9 PMID 16537660
  • Predictive factors and outcomes in endoscopic sinus surgery for chronic rhinosinusitis. (Smith TL, Mendolia-Loffredo S, Loehrl TA, Sparapani R, Laud PW, Nattinger AB) Laryngoscope 2005 Dec;115(12):2199-205 PMID 16369166
  • Prolonging the return visit interval in primary care. (Schectman G, Barnas G, Laud P, Cantwell L, Horton M, Zarling EJ) Am J Med 2005 Apr;118(4):393-9 PMID 15808137
  • Incidence of sports and recreation related injuries resulting in hospitalization in Wisconsin in 2000. (Dempsey RL, Layde PM, Laud PW, Guse CE, Hargarten SW) Inj Prev 2005 Apr;11(2):91-6 PMID 15805437
  • A Bayesian approach to net health benefits: an illustration and application to modeling HIV prevention. (Johnson-Masotti AP, Laud PW, Hoffmann RG, Hayat MJ, Pinkerton SD) Med Decis Making 2004 Nov-Dec;24(6):634-53 PMID 15534344
  • An algorithm for the use of Medicare claims data to identify women with incident breast cancer. (Nattinger AB, Laud PW, Bajorunaite R, Sparapani RA, Freeman JL) Health Serv Res 2004 Dec;39(6 Pt 1):1733-49 PMID 15533184
  • Decentralization of breast cancer surgery in the United States. (Neuner JM, Gilligan MA, Sparapani R, Laud PW, Haggstrom D, Nattinger AB) Cancer 2004 Sep 15;101(6):1323-9 PMID 15368323
  • Objective testing and quality-of-life evaluation in surgical candidates with chronic rhinosinusitis. (Smith TL, Rhee JS, Loehrl TA, Burzynski ML, Laud PW, Nattinger AB) Am J Rhinol 2003 Nov-Dec;17(6):351-6 PMID 14750611
  • Economic expansion is a major determinant of physician supply and utilization. (Cooper RA, Getzen TE, Laud P) Health Serv Res 2003 Apr;38(2):675-96 PMID 12785567
  • Perceptions of environmental safety among individuals with spinal cord injury. (Cesar KW, Garavan R, Laud P, Hayat M, Fiedler IG) Am J Phys Med Rehabil 2002 Oct;81(10):798-800 PMID 12362122
  • Sexual health after spinal cord injury: a longitudinal study. (Fisher TL, Laud PW, Byfield MG, Brown TT, Hayat MJ, Fiedler IG) Arch Phys Med Rehabil 2002 Aug;83(8):1043-51 PMID 12161824
  • The presence or absence of an impalpable testis can be predicted from clinical observations alone. (Mesrobian HG, Chassaignac JM, Laud PW) BJU Int 2002 Jul;90(1):97-9 PMID 12081779
  • Economic and demographic trends signal an impending physician shortage. (Cooper RA, Getzen TE, McKee HJ, Laud P) Health Aff (Millwood) 2002 Jan-Feb;21(1):140-54 PMID 11900066
  • Does breast tumor location influence success of sentinel lymph node biopsy? (Ahrendt GM, Laud P, Tjoe J, Eastwood D, Walker AP, Otterson MF, Redlich PN) J Am Coll Surg 2002 Mar;194(3):278-84 PMID 11893131
  • Intracranial hemorrhage in children younger than 3 years: prediction of intent. (Wells RG, Vetter C, Laud P) Arch Pediatr Adolesc Med 2002 Mar;156(3):252-7 PMID 11876669
  • A Bayesian approach to the transmission/disequilibrium test for binary traits. (George V, Laud PW) Genet Epidemiol 2002 Jan;22(1):41-51 PMID 11754472
  • Probabilistic cost-effectiveness analysis of HIV prevention. Comparing a Bayesian approach with traditional deterministic sensitivity analysis. (Johnson-Masotti AP, Laud PW, Hoffmann RG, Hayat MJ, Pinkerton SD) Eval Rev 2001 Aug;25(4):474-502 PMID 11480309
  • Perceived accessibility versus actual physical accessibility of healthcare facilities. (Sanchez J, Byfield G, Brown TT, LaFavor K, Murphy D, Laud P) Rehabil Nurs 2000 Jan-Feb;25(1):6-9 PMID 10754921
  • Economics of managed care in spinal cord injury. (Fiedler IG, Laud PW, Maiman DJ, Apple DF) Arch Phys Med Rehabil 1999 Nov;80(11):1441-9 PMID 10569439
  • Influence of genetic and environmental factors on melanocytic naevi: a lesson from Turner's syndrome. (Zvulunov A, Wyatt DT, Laud PW, Esterly NB) Br J Dermatol 1998 Jun;138(6):993-7 PMID 9747360
  • Current and projected workforce of nonphysician clinicians. (Cooper RA, Laud P, Dietrich CL) JAMA 1998 Sep 2;280(9):788-94 PMID 9729990
  • The normal kidney growth rate during year 1 of life is variable and age dependent. (Mesrobian HG, Laud PW, Todd E, Gregg DC) J Urol 1998 Sep;160(3 Pt 2):989-93 PMID 9719260
  • Lack of effect of growth hormone therapy on the count and density of melanocytic naevi in children. (Zvulunov A, Wyatt DT, Laud PW, Esterly NB) Br J Dermatol 1997 Oct;137(4):545-8 PMID 9390329