Published Manuscripts


Lieberman DA, Williams JL, Holub JL, Morris CD, Logan JR, Eisen GM, Carney P. Race, Ethnicity, and Sex Affect Risk for Polyps Greater than 9 mm in Average-risk Individuals. Gastroenterology. 2014 Apr 28. pii: S0016-5085(14)00593-9. doi: 10.1053/j.gastro.2014.04.037. [Epub ahead of print] (PMID: 24786894) Abstract

Lieberman D, Holub JL, Morris CD, Logan J, Williams JL, Carney P. Low rate of Large Polyps (>9mm) Within 10 Years After an Adequate Baseline Colonoscopy With no Polyps. Gastroenterology. 2014 Apr 22. pii: S0016-5085(14)00546-0. doi: 10.1053/j.gastro.2014.04.020. [Epub ahead of print] (PMID: 24768680) Abstract

Calderwood AH, Schroy PC 3rd, Lieberman DA, Logan JR, Zurfluh M, Jacobson BC. Boston Bowel Preparation Scale scores provide a standardized definition of adequate for describing bowel cleanliness. Gastrointest Endosc. 2014 Mar 12. pii: S0016-5107(14)00094-7. doi: 10.1016/j.gie.2014.01.031. [Epub ahead of print] Abstract

Lieberman DA, Williams JL, Holub JL, Morris CD, Logan JR, Eisen GM, Carney P. Colonoscopy utilization and outcomes 2000 to 2011. Gastrointest Endosc. 2014 Feb 21. pii: S0016-5107(14)00038-8. doi: 10.1016/j.gie.2014.01.014. [Epub ahead of print] (PMID: 24565067) Abstract

Ron-Tal Fisher O, Gralnek IM, Eisen GM, Williams JL, Holub JL. Endoscopic hemostasis is rarely used for hematochezia: a population-based study from the Clinical Outcomes Research Initiative National Endoscopic Database. Gastrointest Endosc. 2014 Feb;79(2):317-25 doi:10.1016/j.gie.2013.09.004. Epub 2013 Nov 1 Abstract

Calderwood AH, Logan JR, Zurfluh M, Lieberman DA, Jacobson BC, Heeren TC, Schroy PC 3rd. Validity of a Web-based Educational Program to Disseminate a Standardized Bowel Preparation Rating Scale. J Clin Gastroenterol. 2014 Jan 23. [Epub ahead of print] Abstract


Bielawska B, Day AG, Lieberman DA, Hookey LC. Risk factors for early colonoscopic perforation include non-Gastroenterologist endoscopists: a multivariable analysis. Clin Gastroenterol Hepatol. 2013 Jul 23. pii: S1542-3565(13)01046-X. doi: 10.1016/j.cgh.2013.06.030. [Epub ahead of print] Abstract

Enestvedt BK, Eisen GM, Holub J, Lieberman DA. Is the American Society of Anesthesiologists classification useful in risk stratification for endoscopic procedures? Gastrointest Endosc. 2013 Mar;77(3):464-71. doi: 10.1016/j.gie.2012.11.039 (PMID: 23410699) Abstract

Gralnek IM, Ron-Tal Fisher O, Holub JL, Eisen GM. The role of colonoscopy in evaluating hematochezia: a population-based study in a large consortium of endoscopy practices. Gastrointest Endosc. 2013 Mar;77(3):410-8. doi: 10.1016/j.gie.2012.10.025. Epub 2013 Jan 5. (PMID: 23294756). Abstract


Lebwohl B, Tennyson CA, Holub JL, Lieberman DA, Neugut AI, Green PH. Sex and racial disparities in duodenal biopsy to evaluate for celiac disease. Gastrointest Endosc. 2012 Oct;76(4):779-85. Epub 2012 Jun 23. (PMID: 22732871) Abstract

Etzel JP, Williams JL, Jiang Z, Lieberman DA, Knigge K, Faigel DO. Diagnostic yield of colonoscopy to evaluate melena after a nondiagnostic EGD. Gastrointest Endosc. 2012 Apr;75(4):819-26. Epub 2012 Jan 31. (PMID: 22301339) Abstract

Williams JE, Holub JL, Faigel DO. Polypectomy rate is a valid quality measure for colonoscopy: results from a national endoscopy database. Gastrointest Endosc. 2012 Mar;75(3): 576-82. (PMID: 22341104) Abstract

Thakkar K, Alsarraj A, Fong E, Holub JL, Gilger MA, El Serag HB. Prevalence of colorectal polyps in pediatric colonoscopy. Dig Dis Sci. 2012 Apr;57(4):1050-5. Epub 2011 Dec7. (PMID: 22147243) Abstract


Lowenfels AB, Williams JL, Holub JL, Maisonneuve P, Lieberman DA. Determinants of polyp size in patients undergoing screening colonoscopy. BMC Gastroenterology. 2011, 11:101. Epub 2011 Sep 24. Abstract

Lee B, Holub J, Peters D, Lieberman D. Prevalence of colon polyps detected by colonoscopy screening of asymptomatic Hispanic patients. Dig Dis Sci. 2012 Feb;57(2):481-8. Epub 2011 Sep 15. (PMID:21918852) Abstract

Diamond SJ, Enestvedt BK, Jiang Z, Holub JL, Gupta M, Lieberman DA, Eisen GM. Adenoma detection rate increases with each decade of life after 50 years of age. Gastrointest Endosc. 2011 Jul;74(1):135-40. Epub 2011 May 25. (PMID: 21612774) Abstract

Krishnamurthy C, Hilden K, Peterson KA, Mattek N, Adler DG, Fang JC. Endoscopic findings in patients presenting with dysphagia: Analysis of a national endoscopy database. Dysphagia 2011 Jun 15. [Epub ahead of print] Abstract

Thukkani N, Williams JL, Sonnenberg A. Epidemiologic characteristics of patients with inflammatory bowel disease undergoing colonoscopy. Inflamm Bowel Dis. 2011 Jun;(6)1333-7. doi: 10.1002/ibd.21513. Epub 2010 Oct 25. Abstract

Diggs NG, Holub JL, Lieberman DA, Eisen GM, Strate LL. Factors that contribute to blood loss in patients with colonic angiodysplasia from a population-based study. Clin Gastroenterol Hepatol 2011 May;9(5):415-20. Epub 2011 Feb 12. Abstract

Enestvedt BK, Williams JL, Sonnenberg A. Epidemiology and practice patterns of achalasia in a large multi-centre database. Aliment Pharmacol Ther. 2011 Jun;33(11):1209-14. Epub 2011 Apr 11.Abstract


Logan JR, Holub JL, Peters D, Brandstater A. Improving quality cancer screening: the excellence report for colonoscopy. AMIA Annu Symp Proc. 2010 Nov 13:2010;462-6. (PMID: 21347021) Abstract

Iles-Shih L, Collins JF, Holub JL, Lieberman DA. Prevalence of significant neoplasia in FOBT-positive patients on warfarin compared with those not on warfarin. Am J Gastroenterol. 2010 Sep;105(9):2030-4; quiz 1962, 2035. Epub 2010 Aug 3. Abstract

Enestvedt BK, Gralnek IM, Mattek N, Lieberman DA, Eisen GM. Endoscopic therapy for pepetic ulcer hemorrhage: practice variations in a multi-center U.S. consortium. Dig Dis Sci. 2010 Sep;55(9):2568-76. Epub 2010 Jun29. (PMID: 20585979) Abstract

Gerson LB, Michaels L, Ullah N, Gage B, Williams L. Adverse events associated with anticoagulation therapy in the periendoscopic period. Gastrointest Enodsc. 2010 Jun;71(7):1211-1217. Abstract

Holub JL, Silberg DG, Michaels LC, Williams JL, Morris CD, Eisen G. Acid-related upper endoscopy findings in patients with diabetes versus non-diabetic patients. Dig Dis Sci. 2010 Oct;55(10):2853-9. Epub 2010 Apr 22. Abstract

Wang A, Hoda KM, Holub JL, Eisen GM. Does level of sedation impact detection of advanced neoplasia? Dig Dis Sci. 2010 Aug;55(8):2337-43. Epub 2010 Apr 22. Abstract

Gupta M, Holub JL, Eisen G. Do indication and demographics for colonoscopy affect completion? A large national database evaluation. Eur J Gastroenterol Hepatol. 2010 May;22(5):620-7. Epub 2009 Dec22. Abstract

Gupta M, Holub J, Knigge K, Eisen G. Constipation is not associated with an increased rate of findings on colonoscopy: results from a national endoscopy consortium. Endoscopy. 2010 Mar; 42(3):208-12. Epub 2010 Jan25 Abstract

Ko CW, Riffle S, Michaels L, Morris C, Holub J, Shapiro JA, Ciol MA, Kimmey MB, Seeff LC, Lieberman D. Serious complications within 30 days of screening and surveillance colonoscopy are uncommon. Clin Gastroenterol Hepatol. 2010 Feb;8(2):166-73. Epub 2009 Oct 20. Abstract

Rubenstein JH, Mattek N, Eisen G. Age– and sex–specific yield of Barrett's esophagus by endoscopy indication. Gastrointest Endosc. 2010 Jan;71(1):21-7. Epub 2009 Sep 12. Abstract


Wang A, Mattek NC, Holub JL, Lieberman DA, Eisen GM. Prevalence of complicated gastroesophageal reflux disease and Barrett's esophagus among racial groups in a multi-center consortium. Dig Dis Sci. 2009 May;54(5):964-71. Epub 2009 Mar 3 Abstract

Lieberman DA, Faigel DO, Logan JR, Mattek N, Holub J, Eisen G, Morris C, Smith R, Nadel M. Assessment of the quality of colonoscopy reports: results from a multicenter consortium. Gastrointest Endosc 2009 March;69(3):645-53. Abstract

Urquhart J, Eisen G, Faigel DO, Mattek N, Holub J, Lieberman DA. A closer look at same–day bidirectional endoscopy. Gastrointest Endosc 2009 Feb;69(2):271-7. Epub 2008 Aug 23. [Epub ahead of print] Abstract


Lieberman DA, Holub JL, Moravec MD, Eisen GM, Peters D, Morris CD. Prevalence of colon polyps detected by colonoscopy screening in asymptomatic black and white patients. JAMA. 2008;300(12):1417–1422. Abstract

Lieberman D, Moravec M, Holub J, Michaels L, Eisen G. Polyp size and advanced histology in patients undergoing colonoscopy screening: Implications for CT colonography. Gastroenterology 2008 Oct;135(4):1100-5. Epub 2008 Jul 3. Abstract

Saini SD, Eisen G, Mattek N, Schoenfeld P. Utilization of Upper Endoscopy for Surveillance of Gastric Ulcers in the United States. Am J Gastroenterol 2008 Aug; 103(8): 1920–5. Abstract

Rodriguez S, Mattek N, Lieberman D, Fennerty B. Barrett's Esophagus on Repeat Endoscopy: Should We Look More Than Once? Gastrointest Endosc 2008 Aug;103(8):1892-7. Epub 2008 Jun 28. Abstract

Wang A, Mattek NC, Corless CL, Lieberman DA, Eisen GM. The value of traditional upper endoscopy as a diagnostic test for Barrett's esophagus. Gastrointest Endosc 2008 May 30. [Epub ahead of print] Abstract

Enestvedt BK, Gralnek IM, Mattek N, Lieberman DA, Eisen G. An evaluation of endoscopic indications and findings related to nonvariceal upper–GI hemorrhage in a large multicenter consortium. Gastrointest Endosc 2008 Mar;67(3):422–9. Epub 2008 Jan 18. Abstract

Sonnenberg A, Amorosi SL, Lacey MJ, Lieberman DA. Patterns of endoscopy in the United States: analysis of data from the Centers for Medicare and Medicaid Services and the National Endoscopic Database. Gastrointest Endosc 2008 Mar;67(3):489–96. Epub 2008 Jan 7. Abstract


Olson JS, Lieberman DA, Sonnenberg A. Empiric Dilation in Non–obstructive Dysphagia. Dig Dis Sci. 2008 May;53(5):1192–7. Epub 2007 Oct 12. Abstract

Olson JS, Lieberman DA, Sonnenberg A. Practice patterns in the management of patients with esophageal strictures and rings. Gastrointest Endosc 2007 Oct; 66(4): 670–5. Abstract

Sharma VK, Nguyen CC, Crowell MD, Lieberman DA, de Garmo, P, Fleischer DE. A national study of cardiopulmonary unplanned events after GI endoscopy. Gastrointest Endosc 2007 Jul; 66(1): 27–34. Abstract

Thornton JG, Morris AM, Thornton JD, Flowers CR, McCashland TM. Racial Variation in Colorectal Polyp and Tumor Location. J Natl Med Assoc 2007 Jul; 99(7): 723–8.

Wells CD, Heigh RI, Sharma VK, Crowell MD, Gurudu SR, Leighton JA, Mattek N, Fleischer DE. Comparison of Morning versus Afternoon Cecal Intubation Rates. BMC Gastroenterol 2007 7:19. Abstract

Dickman R, Mattek N, Holub J, Peters D, Fass R. Prevalence of Upper Gastrointestinal Tract Findings in Patients With Noncardiac Chest Pain Versus Those With Gastroesophageal Reflux Disease (GERD)–Related Symptoms: Results from a National Endoscopic Database. Am J Gastroenterol 2007; 102: 1–7. Abstract

Thakkar K, El–Serag HB, Mattek N, Gilger MA. Complications of Pediatric EGD: a 4–year Experience in PEDS–CORI Gastrointest Endo 2007; 65(2): 213–21. Abstract

Kovalak M, Lake J, Mattek N, Eisen G, Lieberman D, Zaman A. Endoscopic screening for varices in cirrhotics: Data from a national endoscopic database. Gastrointest Endosc 2007 Jan; 65(1): 82–8. Abstract


El–Serag HB, Gilger MA, Shub MD, Richardson P, Bancroft J. The Prevalence of Suspected Barrett's Esophagus in Children and Adolescents: A Multi–center Endoscopic Study. Gastrointest Endo 2006; 64(5): 671–5. Abstract

Auslander JN, Lieberman DA, Sonnenberg A. Endoscopic procedures and diagnoses are not influenced by seasonal variations. Gastrointest Endosc 2006 Feb; 63(2): 267–72. Abstract

Vargo JJ, Holub JL, Faigel DO, Lieberman DA, Eisen GM. Risk factors for cardiopulmonary events during propofol–mediated upper endoscopy and colonoscopy. Aliment Pharmacol Ther 2006 Sep 15; 24(6): 955–63. Abstract


Lieberman DA, Holub J, Eisen G, Kramer D, Morris CD. Utilization of colonoscopy in the United States: results from a national consortium. Gastrointest Endosc 2005 Dec; 62(6): 875–883. Abstract

Lieberman DA, Holub J, Eisen G, Kraemer D, Morris CD. Prevalence of polyps greater than 9 mm in a consortium of diverse clinical practice settings in the United States. Clin Gastroenterol Hepatol. 2005 Aug;3(8):798–805. Abstract

Auslander JN, Lieberman DA, Sonnenberg A. Lack of seasonal variation in the endoscopic diagnoses of Crohn's disease and ulcerative colitis. Am J Gastroenterol. 2005 Oct;100(10):2233–8. Abstract

Harewood GC, Mattek NC, Holub JL, Peters D, Lieberman DA. Variation in practice of ileal intubation among diverse endoscopy settings: results from a national endoscopic database. Aliment Pharmacol Ther 2005; 22: 571–8. Abstract

Harewood GC, Olson JS, Mattek NC, Holub JL, Lieberman DA. Colonic biopsy practice for evaluation of diarrhea in patients with normal endoscopic findings: Results from a national endoscopic database. Gastrointest Endosc 2005 Mar;61(3):371–5. Abstract


Lieberman D, Fennerty MB, Morris CD, Holub J, Eisen G, Sonnenberg A. Endoscopic evaluation of patients with dyspepsia: Results from the national endoscopic data repository. Gastroenterology 2004; 127(4): 1067–75. Abstract

Logan JR, McCashland TM, Lieberman DA. Evaluation of reliability in the use of endoscopic terminology. Medinfo 2004; 2004: 396–400. Abstract

Harewood GC, Holub JL, Lieberman DA. Variation in Small Bowel Biopsy Performance among Diverse Endoscopy Settings: Results from a National Endoscopic Database. Am J Gastroenterol 2004; 99(9):1790–4. Abstract

Boonpongmanee S, Fleischer DE, Pezzullo JC, Collier K, Mayoral W, Al–Kawas F, Chutkan R, Lewis JH, Tio TL, Benjamin SB. The frequency of peptic ulcer as a cause of upper–GI bleeding is exaggerated. Gastrointest Endo 2004; 59(7): 788–94. Abstract

Gilger MA, Spearman RS, Dietrich CL, Spearman G, Wilsey MJ Jr, Zayat MN. Safety and effectiveness of ketamine as a sedative agent for pediatric GI endoscopy. Gastrointest Endo 2004; 59(6): 659–63. Abstract

Harewood GC, Holub JL, Lieberman DA. Biopsy specimen acquisition in patients with newly diagnosed peptic ulcer disease as determined from a national endoscopic database. Gastrointest Endo 2004; 59(6): 664–9. Abstract

Walter L, de Garmo P and Covinsky K. Older age and female sex are associated with inadequate reach of screening flexible sigmoidoscopy. Am J Med 2004; 116(3): 174–8. Abstract

Harewood GC, Lieberman DA. Colonoscopy practice patterns since introduction of medicare coverage for average–risk screening. Clin Gastroenterol Hepatol 2004; 2: 72–7. Abstract


Dekel R, PearsonT, Wendel C, de Garmo P, Fennerty MB, Fass R. Assessment of oesophageal motor function in patients with dysphagia or chest pain – the Clinical Outcomes Research Initiative experience. Aliment Pharmacol Ther 2003; 18(11–12): 1083–9. Abstract

Harewood GC, Lieberman DA. Prevalence of advanced neoplasia at screening colonoscopy in men in private practice versus academic and veterans affairs medical centers. Am J Gastroenterol 2003; 98(10): 2312–6. Abstract

Cram P, Fendrick AM, Inadomi J, Cowen ME, Carpenter D and Vijan S. The impact of a celebrity promotional campaign on the use of colon cancer screening. Arch Intern Med 2003; 163(13): 1601–5. Abstract

Harewood G, Sharma V and de Garmo P. Impact of colonoscopy preparation quality on detection of suspected colonic neoplasia. Gastrointest Endo 2003; 58;1: 76–8. Abstract


Shumaker D, de Garmo P and Faigel D. Potential impact of preoperative EUS on esophageal cancer management and cost. Gastrointest Endo 2002; 56; 3:391–6. Abstract


McCashland T, Brand R, Lyden E and de Garmo P. Gender differences in colorectal polyps and tumors. American Journal of Gastroenterology 2001; 96: 882–6. Abstract


Logan J, Klopfer K. The use of a standardized terminology for comparison of free text and structured data entry. JAMIA Symposium Supplement 2000. Abstract

McCashland T, Brand R, Lyden E and de Garmo P. The time and financial impact of training fellows in endoscopy. American Journal of Gastroenterology 2000; 95: 3129–32. Abstract

Lieberman D, de Garmo P, Fleischer D, Eisen G, and Helfand M. Patterns of endoscopy use in the United States. Gastroenterology 2000; 118: 619–24. Abstract

Lieberman D, de Garmo P, Fleischer D, Eisen G, Chan B and Helfand M. Colonic neoplasia in patients with nonspecific GI symptoms. Gastrointest Endo 2000; 51: 647–51. Abstract


Lieberman D. Disease–specific outcomes assessment for gastroesophageal reflux disease. Gastrointestinal Endoscopy Clinics of North America 1999; 9: 657–63. Abstract

Hersh W. Oregon Health Sciences University's 2–for–1 proposition: The fusion of medical informatics and outcomes research. MD Computing 1999; 16: 35–7.