Cutoff values of the Inflammatory Bowel Disease Questionnaire to predict a normal health related quality of life

O'Morain, 1989, Criteria of case definition in Crohn's disease and ulcerative colitis, Scand J Gastroenterol Suppl, 170, 7, 10.3109/00365528909091340 Loftus, 2004, Clinical epidemiology of inflammatory bowel disease: incidence, prevalence, and environmental influences, Gastroenterology, 126, 1504, 10.1053/j.gastro.2004.01.063 Pajares, 2001, Epidemiology of inflammatory bowel disease in Spain. A systematic review, Rev Enferm Dig, 93, 15 Bernklev, 2006, Relationship between sick leave, unemployment, disability, and health-related quality of life in patients with inflammatory bowel disease, Inflamm Bowel Dis, 12, 402, 10.1097/01.MIB.0000218762.61217.4a Vergara, 2002, Assessing the quality of life of household members of patients with inflammatory bowel disease: development and validation of a specific questionnaire, Am J Gastroenterol, 97, 1429, 10.1111/j.1572-0241.2002.05684.x Casellas, 2005, Impairment of health-related quality of life in patients with inflammatory bowel disease: a Spanish multicenter study, Inflamm Bowel Dis, 11, 488, 10.1097/01.MIB.0000159661.55028.56 Fuller-Thomson, 2006, Depression an inflammatory bowel disease: findings from two nationally representative Canadian surveys, Inflamm Bowel Dis, 12, 697, 10.1097/00054725-200608000-00005 The WHOQOL Group, 1995, The World Health Organization Quality of Life assessment: position paper from the World Health Organization, Soc Sci Med, 41, 1403, 10.1016/0277-9536(95)00112-K Guyatt, 1989, A new measure of health status for clinical trials in inflammatory bowel disease, Gastroenterology, 96, 804, 10.1016/S0016-5085(89)80080-0 Love, 1992, Quality of life in inflammatory bowel disease, J Clin Invest, 14, 15 Drossman, 1989, Health-related quality of life in inflammatory bowel disease. Functional status and patient worries and concerns, Dig Dis Sci, 34, 1379, 10.1007/BF01538073 Otley, 2002, The IMPACT questionnaire: a valid measure of health-related quality of life in pediatric inflammatory bowel disease, J Pediatr Gastroenterol Nutr, 35, 557, 10.1097/00005176-200210000-00018 Farmer, 1992, Quality of life assessment by patients with inflammatory bowel disease, Cleve Clin J Med, 59, 35, 10.3949/ccjm.59.1.35 König, 2002, Validation of the EuroQol questionnaire in patients with inflammatory bowel disease, Eur J Gastroenterol Hepatol, 14, 1205, 10.1097/00042737-200211000-00008 Sandborn, 2002, A review of activity indices and efficacy endpoints for clinical trials of medical therapy in adults with Crohn's disease, Gastroenterology, 122, 512, 10.1053/gast.2002.31072 D'Haens, 2007, A review of activity indices and efficacy end points for clinical trials of medical therapy in adults with ulcerative colitis, Gastroenterology, 132, 763, 10.1053/j.gastro.2006.12.038 Hlavaty, 2006, Evaluation of short-term responsiveness and cutoff values of inflammatory bowel disease questionnaire in Crohn's disease, Inflamm Bowel Dis, 12, 199, 10.1097/01.MIB.0000217768.75519.32 Higgins, 2005, Patient defined dichotomous end points for remission and clinical improvement in ulcerative colitis, Gut, 546, 782, 10.1136/gut.2004.056358 López-Vivancos, 1999, Validation of the Spanish version of the Inflammatory Bowel Disease Questionnaire on ulcerative colitis and Crohn's disease, Digestion, 60, 274, 10.1159/000007670 Badia, 1995, Influence of sociodemographic and health status variables on evaluation of health states in a Spanish population, Eur J Public Health, 5, 87, 10.1093/eurpub/5.2.87 Badia, 1999, The Spanish version of EuroQol: a description and its applications. European Quality of Life scale, Med Clin (Barc), 112, 79 Masachs, 2007, Spanish translation, adaptation, and validation of the 32-item questionnaire on quality of life for inflammatory bowel disease (IBDQ-32), Rev Esp Enferm Dig, 99, 511 Book chapter 4.4 “L'estat de salut i la qualitat de vida”. Pla de salut de Catalunya a l'horitzó 2010. Direcció General de Planificació i Avaluació Eds. First ed. 2009;77–107. ISBN: 978-84-393-7963-8 Casellas, 2002, Factors affecting health related quality of life of patients with inflammatory bowel disease, Qual Life Res, 11, 775, 10.1023/A:1020841601110