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Brennan M.R. Spiegel
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Roger Bolus

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Roger Bolus, PhD

Publications (18)
Roger Bolus

Dr. Bolus is the Principal Psychometrician for the UCLA/VA Center for Outcomes Research and Education. He received his Ph.D. from UCLA in 1981 with a specialization in the area of research methods, measurement and evaluation.

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Publications by Roger Bolus

Title Dialysis practices that distinguish top vs. bottom performing facilities by hemoglobin outcomes.  
Author(s) Spiegel BMR, Bolus R, Desai AA, Zagar P, Parker T, Moran J, Bolus S, Solomon MD, Khawar O, Gitlin M, Talley J, Nissenson A 
Publication Manuscript in primary submission. 
Article View/Download Article
Title Psychometric evaluation of endpoints in IBS randomized controlled trials: a Rome Foundation Working Group report.  
Author(s) Spiegel BMR, Camilleri M, Bolus R, Andresen V, Chey WD, Fehnel S, Mangel A, Talley NJ, Whiehead WE 
Publication Manuscript in secondary revision.  
Article PDF Not Available
Title Developing valid and reliable health utilities in irritable bowel syndrome: results from the IBS PROOF cohort. 
Author(s) Spiegel BMR, Harris L, Lucak S, Mayer E, Naliboff B, Bolus R, Esrailian E, Chey WD, Lembo A, Karsan H, Tillisch K, Dulai G, Talley J, Chang L 
Publication American Journal of Gastroenterology. 2009 [Epub ahead of print] 
Article PDF Not Available
Title Health Related Quality of Life Predicts Mortality in Patients awaiting Liver Transplantation.  
Author(s) Kanwal F, Gralnek IM, Bolus R, Kim SJ, Spiegel BMR.  
Publication Clinical Gastroenterology and Hepatology 2009 [Epub ahead of print]  
Article PDF Not Available
Title Is there “cherry picking” in the ESRD program? Perceptions from a dialysis provider survey.  
Author(s) Desai A, Bolus R, Nissenson A, Chertow GM, Bolus S, Solomon M, Khawar O, Talley J, Spiegel BMR 
Publication Clinical Journal of the American Society of Nephrology (CJASN). 2009 (4):772-7  
Article View/Download Article
Title Identifying “best practices” in dialysis care: results of a national survey and cognitive interviews of dialysis stakeholders.  
Author(s) Desai A, Bolus R, Nissenson A, Bolus S, Solomon M, Khawar O, Gitlin M, Talley J, Spiegel BMR 
Publication Clinical Journal of the American Society of Nephrology (CJASN). 2008; Apr 16 
Article View/Download Article
Title Prospective validation of the short form liver disease quality of life instrument (SF-LDQOL). 
Author(s) Kanwal F, Spiegel BMR, Hays RD, Bolus R, Kim SJ, Gralnek IM 
Publication Alimentary Pharmacology & Therpeutic. 2008;28:1088-101 
Article View/Download Article
Title Development and validation of a disease-targeted quality of life instrument in chronic hepatitis B: The hepatitis B quality of life instrument, version 1.0 
Author(s) Spiegel BM, Bolus R, Han S, Tong M, Esrailian E, Talley J, Tran T, Smith J, Karsan HA, Durazo F, Bacon B, Martin P, Younossi Z, Hwa-Ong S, Kanwal F. 
Publication Hepatology. 2007 Jul;46(1):113-21. 
Article PDF Not Available
Title Characterization of the alternating bowel habit subtype in patients with irritable bowel syndrome. 
Author(s) Tillisch K, Labus JS, Naliboff BD, Bolus R, Shetzline M, Mayer EA, Chang L. 
Publication Am J Gastroenterol. 2005;100:896-904 
Article View/Download Article
Title Impact of irritable bowel syndrome on patients' lives: development and psychometric documentation of a disease-specific measure for use in clini 
Author(s) Longstreth GF, Bolus R, Naliboff B, Chang L, Kulich KR, Carlsson J, Mayer EA, Naesdal J, Wiklund IK. 
Publication Eur J Gastroenterol Hepatol. 2005;17:411-20 
Article View/Download Article
Title Is a negative colonoscopy associated with improved health-related quality of life or reassurance in irritable bowel syndrome? 
Author(s) Spiegel BMR, Gralnek IM, Bolus R, Mayer E, Chang L, Dulai GS, Naliboff B. 
Publication Gastrointestinal Endoscopy 2005;62:892-899 
Article View/Download Article
Title Traditional Chinese medicine based subgrouping of irritable bowel syndrome patients. 
Author(s) Tan S, Tillisch K, Bolus R, Olivas T, Naliboff L, Chang L, Spiegel BMR, Mayer EA S. 
Publication Am J Chin Med. 2005;33(3):365-79 
Article View/Download Article
Title Clinical determinants of health-related quality of life in patients with irritable bowel syndrome. 
Author(s) Spiegel BMR, Gralnek IM, Mayer EB, Bolus R, Dulai GS, Chang L, Naliboff B. 
Publication Archives of Internal Medicine 2004;164:1773-1780 
Article View/Download Article
Title The effect of life stress on symptoms of heartburn. 
Author(s) Naliboff BD, Mayer M, Fass R, Fitzgerald LZ, Chang L, Bolus R, Mayer EA. 
Publication Psychosom Med. 2004;66:426-34 
Article PDF Not Available
Title The effect of life stress on symptoms of heartburn. 
Author(s) Naliboff BD, Mayer M, Fass R, Fitzgerald LZ, Chang L, Bolus R, Mayer EA. 
Publication Psychosom Med. 2004 May-Jun;66(3):426-34. 
Article PDF Not Available
Title The Visceral Sensitivity Index: development and validation of a gastrointestinal symptom-specific anxiety scale. 
Author(s) Labus JS, Bolus R, Chang L, Wiklund I, Naesdal J, Mayer EA, Naliboff BD. 
Publication Aliment Pharmacol Ther. 2004;20:89-97 
Article View/Download Article
Title Is there a difference between abdominal pain and discomfort in moderate to severe IBS patients? 
Author(s) Sach J, Bolus R, Fitzgerald L, Naliboff BD, Chang L, Mayer EA. 
Publication Am J Gastroenterol. 2002;97:3131-8 
Article PDF Not Available
Title Patient satisfaction: the indispensable outcome. 
Author(s) Bolus R, Pitts J. 
Publication Manag Care. 1999;8:24-8 
Article PDF Not Available
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