Theresa H Nguyen1, Aaron P Thrift2, Massimo Rugge3, Hashem B El-Serag1. 1. Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA; Center for Innovations in Quality, Effectiveness and Safety (IQuESt), Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas, USA. 2. Section of Epidemiology and Population Sciences, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas, USA. 3. Department of Diagnostic Sciences, University of Padova, Padova, Italy.
Abstract
BACKGROUND AND AIMS: Less than 10% of patients diagnosed with esophageal adenocarcinoma have a pre-existing Barrett's esophagus (BE) diagnosis, possibly because of suboptimal performance of guidelines. We examined the prevalence of BE in a previously unscreened primary care population and the potential yield of practice BE screening guidelines. METHODS: This was a retrospective analysis of a prospective cross-sectional study of consecutively recruited unreferred patients from primary care clinics who underwent study upper endoscopy. We examined the performance of BE screening guidelines of the European Society of Gastrointestinal Endoscopy (ESGE), British Society of Gastroenterology (BSG), American Society for Gastrointestinal Endoscopy (ASGE), American College of Gastroenterology (ACG), American Gastroenterological Association (AGA), and our own modification of guidelines. RESULTS: We identified 44 BE cases and 469 control subjects (prevalence, 8.6%). Among 371 patients without GERD symptoms, 25 (6.7%) had BE. The AGA guidelines requiring ≥2 BE risk factors had sensitivity of 100% and specificity of only .2%, whereas ACG, ASGE, ESGE, and BSG guidelines (all requiring GERD first) had low sensitivities (38.6%-43.2%), specificities ranging from 67.4% to 76.5%, and area under the receiver operating curve (AUROC) of .50 to .60. Our 2-pronged approach depending on presence or absence of GERD symptoms but with other risk factors achieved sensitivity of 81.8%, specificity of 51.2%, and AUROC of .66. CONCLUSIONS: Over half of BE cases were without frequent GERD symptoms, but virtually all had at least 1 known BE risk factor. Practice guidelines requiring GERD symptoms have low sensitivity, whereas those not requiring GERD have low specificity. We have proposed a screening guideline with better use of known risk factors.
BACKGROUND AND AIMS: Less than 10% of patients diagnosed with esophageal adenocarcinoma have a pre-existing Barrett's esophagus (BE) diagnosis, possibly because of suboptimal performance of guidelines. We examined the prevalence of BE in a previously unscreened primary care population and the potential yield of practice BE screening guidelines. METHODS: This was a retrospective analysis of a prospective cross-sectional study of consecutively recruited unreferred patients from primary care clinics who underwent study upper endoscopy. We examined the performance of BE screening guidelines of the European Society of Gastrointestinal Endoscopy (ESGE), British Society of Gastroenterology (BSG), American Society for Gastrointestinal Endoscopy (ASGE), American College of Gastroenterology (ACG), American Gastroenterological Association (AGA), and our own modification of guidelines. RESULTS: We identified 44 BE cases and 469 control subjects (prevalence, 8.6%). Among 371 patients without GERD symptoms, 25 (6.7%) had BE. The AGA guidelines requiring ≥2 BE risk factors had sensitivity of 100% and specificity of only .2%, whereas ACG, ASGE, ESGE, and BSG guidelines (all requiring GERD first) had low sensitivities (38.6%-43.2%), specificities ranging from 67.4% to 76.5%, and area under the receiver operating curve (AUROC) of .50 to .60. Our 2-pronged approach depending on presence or absence of GERD symptoms but with other risk factors achieved sensitivity of 81.8%, specificity of 51.2%, and AUROC of .66. CONCLUSIONS: Over half of BE cases were without frequent GERD symptoms, but virtually all had at least 1 known BE risk factor. Practice guidelines requiring GERD symptoms have low sensitivity, whereas those not requiring GERD have low specificity. We have proposed a screening guideline with better use of known risk factors.
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