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Factors Associated With Short Withdrawal Time and Polyp Detection Rate During Colonoscopy

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT01487356
First Posted: December 7, 2011
Last Update Posted: December 7, 2011
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
University of British Columbia
  Purpose
Colonoscopy withdrawal times are a critical element in determining quality of colonoscopy; however, few studies have evaluated specific factors that may influence the duration of withdrawal, and specifically short withdrawal times. Other factors affecting polyp detection rate, one element of quality of colonoscopy, also need further study. By collecting data on hundreds of colonoscopies performed by 9 endoscopists, our goal was to identify factors associated with withdrawal time, inappropriately short withdrawal times, and polyp detection rate during colonoscopy.

Condition Intervention
Colon Polyps Other: No intervention

Study Type: Observational
Study Design: Time Perspective: Prospective
Official Title: Factors Associated With Short Withdrawal Time and Polyp Detection Rate During Colonoscopy

Resource links provided by NLM:


Further study details as provided by University of British Columbia:

Enrollment: 802
Study Start Date: May 2008
Study Completion Date: June 2009
Primary Completion Date: June 2009 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
Patients undergoing colonoscopy
Data was collected on all adult patients undergoing outpatient colonoscopy at St. Paul's Hospital from May 2008 to June 2009. Exclusion criteria were prior colon resection and repeat colonoscopy for the purpose of endoscopic therapy for known lesions.
Other: No intervention
Colonoscopies were conducted as per the endoscopist's usual practice. No change in protocol was expected.

Detailed Description:

Background:

Colonoscopy withdrawal times are a critical element in determining quality of colonoscopy; however, few studies have evaluated specific factors that may influence the duration of withdrawal, and specifically short withdrawal times. Other factors affecting polyp detection rate, one element of quality of colonoscopy, also need further study.

Objective:

To identify factors associated with withdrawal time, inappropriately short withdrawal times, and polyp detection rate during colonoscopy.

Design:

Data were prospectively collected (05/08-06/09) on 802 colonoscopies conducted by 9 blinded endoscopists, including patient age and sex, indication, colonoscope insertion and withdrawal time, biopsies performed, number/size of polyps and method of resection, bowel preparation quality, time of day, day of week, endoscopist, position of the procedure within the endoscopist's slate, and call status of the endoscopist.

Setting:

This study was conducted at a single tertiary care hospital, St. Paul's Hospital, in Vancouver, British Columbia.

  Eligibility

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
All adult patients undergoing colonoscopy at St. Paul's Hospital in Vancouver, BC.
Criteria

Inclusion Criteria:

  • All adult patients undergoing colonoscopy at St. Paul's Hospital in Vancouver, BC.

Exclusion Criteria:

  • Exclusion criteria were prior colon resection and repeat colonoscopy for the purpose of endoscopic therapy for known lesions.
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01487356


Locations
Canada, British Columbia
St. Paul's Hospital
Vancouver, British Columbia, Canada, V6Z 1Y6
Sponsors and Collaborators
University of British Columbia
Investigators
Principal Investigator: Rob Enns, MD University of British Columbia
  More Information

Responsible Party: University of British Columbia
ClinicalTrials.gov Identifier: NCT01487356     History of Changes
Other Study ID Numbers: H10-00312
First Submitted: August 3, 2011
First Posted: December 7, 2011
Last Update Posted: December 7, 2011
Last Verified: December 2011

Keywords provided by University of British Columbia:
Colonoscopy
quality assurance
withdrawal time
polyp detection rate

Additional relevant MeSH terms:
Polyps
Pathological Conditions, Anatomical