Clinical trial · Observational
Case Volume and Adenoma Rate During Screening Colonoscopy
Case Volume and Adenoma Detection Rates During Screening Colonoscopy
NCT00860665CI-TRIAL-00002125completedClinicalTrials.gov clinicaltrialsProvenance
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
Screening colonoscopy has been established as the most effective means of colorectal cancer prevention. This is based on the fact that colonoscopy detects and removes colonic polyps (adenomas) which are known to progress to cancer if left untreated. The present study examines the question whether case volume (i.e., the number of colonoscopies performed per year) correlates with colonoscopy quality, i.e., adenoma detection rate.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Colorectal Cancer | Malignant Colorectal Neoplasm | CURATED_BROADER | 0.80 |
Interventions
Interventions (0)
Data not yet available
No intervention recorded.
Design
Arms and outcomes
Arms (1)
- label
- 1
- description
- Observational study on consecutive persons over the age of 55 years presenting for screening colonoscopy
Primary outcomes (1)
- measure
- Correlation of adenoma detection rate with case volume of endoscopists
- timeFrame
- 18 months
Secondary outcomes (1)
- measure
- Patient acceptance in relation to procedural factors (e.g. sedation)
- timeFrame
- 18 months
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 55 Years
- Maximum age
- 85 Years
Show eligibility criteria text
Inclusion Criteria: * all persons willing and able to undergo screening colonoscopy over the age of 55 years Exclusion Criteria: * any condition not compatible with the definition of screening colonoscopy
References
Publications (3)
- DERIVEDAdler A, Lieberman D, Aminalai A, Aschenbeck J, Drossel R, Mayr M, Mross M, Scheel M, Schroder A, Keining C, Stange G, Wiedenmann B, Gauger U, Altenhofen L, Rosch T. Data quality of the German screening colonoscopy registry. Endoscopy. 2013 Oct;45(10):813-8. doi: 10.1055/s-0033-1344583. Epub 2013 Sep 9. PMID 24019130
- DERIVEDAdler A, Wegscheider K, Lieberman D, Aminalai A, Aschenbeck J, Drossel R, Mayr M, Mross M, Scheel M, Schroder A, Gerber K, Stange G, Roll S, Gauger U, Wiedenmann B, Altenhofen L, Rosch T. Factors determining the quality of screening colonoscopy: a prospective study on adenoma detection rates, from 12,134 examinations (Berlin colonoscopy project 3, BECOP-3). Gut. 2013 Feb;62(2):236-41. doi: 10.1136/gutjnl-2011-300167. Epub 2012 Mar 22. PMID 22442161
- DERIVEDAdler A, Aminalai A, Aschenbeck J, Drossel R, Mayr M, Scheel M, Schroder A, Yenerim T, Wiedenmann B, Gauger U, Roll S, Rosch T. Latest generation, wide-angle, high-definition colonoscopes increase adenoma detection rate. Clin Gastroenterol Hepatol. 2012 Feb;10(2):155-9. doi: 10.1016/j.cgh.2011.10.026. Epub 2011 Nov 2. PMID 22056301