Repeat Colonoscopy within 6 Months after Initial Outpatient Colonoscopy in Ontario: A Population-Based Cross-Sectional Study

Background. The goal of this study is to examine utilization of early repeat colonoscopy ≤ 6 months after an index procedure. Methods. We identified persons having repeat colonoscopy ≤ 6 months following outpatient colonoscopy without prior colonoscopy ≤ 5 years or prior diagnosis of colorectal canc...

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Main Authors: Lawrence Paszat, Rinku Sutradhar, Nancy N. Baxter, Jill Tinmouth, Linda Rabeneck
Format: Article
Language:English
Published: Wiley 2017-01-01
Series:Canadian Journal of Gastroenterology and Hepatology
Online Access:http://dx.doi.org/10.1155/2017/5917057
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author Lawrence Paszat
Rinku Sutradhar
Nancy N. Baxter
Jill Tinmouth
Linda Rabeneck
author_facet Lawrence Paszat
Rinku Sutradhar
Nancy N. Baxter
Jill Tinmouth
Linda Rabeneck
author_sort Lawrence Paszat
collection DOAJ
description Background. The goal of this study is to examine utilization of early repeat colonoscopy ≤ 6 months after an index procedure. Methods. We identified persons having repeat colonoscopy ≤ 6 months following outpatient colonoscopy without prior colonoscopy ≤ 5 years or prior diagnosis of colorectal cancer (CRC). We modeled repeat colonoscopy using a generalized estimating equation with an exchangeable correlation structure to account for clustering of patients by endoscopist. Results. The population included 334,663 persons, 7,892 (2.36%) of whom had an early repeat colonoscopy within 6 months. Overall, endoscopist prior year colonoscopy volume was inversely related to repeat ≤ 6 months. Repeat colonoscopy ≤ 6 months varied by the clinical setting of the index colonoscopy (adjusted OR = 1.41 (95% CI 1.29–1.55)) at nonhospital facilities compared to teaching or community hospitals. Among those who had polypectomy or biopsy, the adjusted OR for early repeat ≤ 6 months was elevated among those whose index colonoscopy was at a nonhospital facility (OR 1.44, 95% CI 1.30–1.60), compared to those at a teaching hospital or community hospital. Conclusions. Repeat colonoscopy ≤ 6 months after an index procedure is associated with the clinical setting of the index colonoscopy.
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spelling doaj-art-033843924c0e40a69d6fe2eeb876e4412025-08-20T02:02:57ZengWileyCanadian Journal of Gastroenterology and Hepatology2291-27892291-27972017-01-01201710.1155/2017/59170575917057Repeat Colonoscopy within 6 Months after Initial Outpatient Colonoscopy in Ontario: A Population-Based Cross-Sectional StudyLawrence Paszat0Rinku Sutradhar1Nancy N. Baxter2Jill Tinmouth3Linda Rabeneck4Institute for Clinical Evaluative Sciences, University of Toronto, G106 2075 Bayview Avenue, Toronto, ON, M4N 3M5, CanadaInstitute for Clinical Evaluative Sciences, University of Toronto, G106 2075 Bayview Avenue, Toronto, ON, M4N 3M5, CanadaDepartment of Surgery and Li Ka Shing Knowledge Institute, St. Michael’s Hospital, University of Toronto, 30 Bond Street, Toronto, ON, M5B 1W8, CanadaSunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, CanadaPrevention and Cancer Control, Cancer Care Ontario, University of Toronto, 620 University Avenue, Toronto, ON, M5G 2L7, CanadaBackground. The goal of this study is to examine utilization of early repeat colonoscopy ≤ 6 months after an index procedure. Methods. We identified persons having repeat colonoscopy ≤ 6 months following outpatient colonoscopy without prior colonoscopy ≤ 5 years or prior diagnosis of colorectal cancer (CRC). We modeled repeat colonoscopy using a generalized estimating equation with an exchangeable correlation structure to account for clustering of patients by endoscopist. Results. The population included 334,663 persons, 7,892 (2.36%) of whom had an early repeat colonoscopy within 6 months. Overall, endoscopist prior year colonoscopy volume was inversely related to repeat ≤ 6 months. Repeat colonoscopy ≤ 6 months varied by the clinical setting of the index colonoscopy (adjusted OR = 1.41 (95% CI 1.29–1.55)) at nonhospital facilities compared to teaching or community hospitals. Among those who had polypectomy or biopsy, the adjusted OR for early repeat ≤ 6 months was elevated among those whose index colonoscopy was at a nonhospital facility (OR 1.44, 95% CI 1.30–1.60), compared to those at a teaching hospital or community hospital. Conclusions. Repeat colonoscopy ≤ 6 months after an index procedure is associated with the clinical setting of the index colonoscopy.http://dx.doi.org/10.1155/2017/5917057
spellingShingle Lawrence Paszat
Rinku Sutradhar
Nancy N. Baxter
Jill Tinmouth
Linda Rabeneck
Repeat Colonoscopy within 6 Months after Initial Outpatient Colonoscopy in Ontario: A Population-Based Cross-Sectional Study
Canadian Journal of Gastroenterology and Hepatology
title Repeat Colonoscopy within 6 Months after Initial Outpatient Colonoscopy in Ontario: A Population-Based Cross-Sectional Study
title_full Repeat Colonoscopy within 6 Months after Initial Outpatient Colonoscopy in Ontario: A Population-Based Cross-Sectional Study
title_fullStr Repeat Colonoscopy within 6 Months after Initial Outpatient Colonoscopy in Ontario: A Population-Based Cross-Sectional Study
title_full_unstemmed Repeat Colonoscopy within 6 Months after Initial Outpatient Colonoscopy in Ontario: A Population-Based Cross-Sectional Study
title_short Repeat Colonoscopy within 6 Months after Initial Outpatient Colonoscopy in Ontario: A Population-Based Cross-Sectional Study
title_sort repeat colonoscopy within 6 months after initial outpatient colonoscopy in ontario a population based cross sectional study
url http://dx.doi.org/10.1155/2017/5917057
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AT nancynbaxter repeatcolonoscopywithin6monthsafterinitialoutpatientcolonoscopyinontarioapopulationbasedcrosssectionalstudy
AT jilltinmouth repeatcolonoscopywithin6monthsafterinitialoutpatientcolonoscopyinontarioapopulationbasedcrosssectionalstudy
AT lindarabeneck repeatcolonoscopywithin6monthsafterinitialoutpatientcolonoscopyinontarioapopulationbasedcrosssectionalstudy