Universität zu Köln

Schramm, C., Scheller, I., Franklin, J., Demir, M., Kuetting, F., Nierhoff, D., Goeser, T., Toex, U. and Steffen, H. M. (2017). Predicting ADR from PDR and individual adenoma-to-polyp-detection-rate ratio for screening and surveillance colonoscopies: A new approach to quality assessment. United European Gastroenterol. J., 5 (5). S. 742 - 750. THOUSAND OAKS: SAGE PUBLICATIONS INC. ISSN 2050-6414

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Abstract

Background and aims: Adenoma detection rate (ADR) has been established as a quality indicator for screening colonoscopy. Because ADR is cumbersome to obtain in routine practice, polyp detection rate (PDR), polypectomy rate (PR) and adenoma-to-polyp-detection-rate-ratio (APDRR) have been proposed to estimate ADR. This study aimed to evaluate APDRR in order to estimate ADR (ADR(est)) in different settings. Methods: Average risk screening and surveillance colonoscopies from a community-based private practice and a tertiary academic hospital setting were retrospectively evaluated. APDRR was calculated as averaged group APDRR for all study procedures (APDRR) and for the first half of study procedures of each gastroenterologist (APDRR(ag)) or individually for each gastroenterologist on the basis of his or her first 25, 50 and 100 colonoscopies (APDRR(ind)). ADR(est) was determined from PDR by using APDRR, APDRR(ag), and APDRR(ind), respectively. Results: A total of 2717 individuals were analyzed. Using APDRR, significant correlations between ADR and ADR(est) were observed for the entire (0.944, p<0.001), proximal (0.854, p<0.001), and distal (0.977, p<0.001) colon. These correlations were lost when APDRR(ag) was used to estimate each gastroenterologist's ADR for the second half of his or her included colonoscopies. However, ADR and ADR(est) correlated significantly with a root-mean-square-error of 6.8% and 5.8% when APDRR(ind) on the basis of each gastroenterologist's first 50 and 100 colonoscopies was used for subsequent colonoscopies. Conclusions: ADR for subsequent colonoscopies of an individual endoscopist can be reliably estimated from PDR by using an individually calculated APDRR. Prospective studies are needed to verify this promising approach in different practice settings.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schramm, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Scheller, I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Franklin, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Demir, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kuetting, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nierhoff, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Goeser, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Toex, U. UNSPECIFIED UNSPECIFIED UNSPECIFIED Steffen, H. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-224458
DOI:	10.1177/2050640616675220
Journal or Publication Title:	United European Gastroenterol. J.
Volume:	5
Number:	5
Page Range:	S. 742 - 750
Date:	2017
Publisher:	SAGE PUBLICATIONS INC
Place of Publication:	THOUSAND OAKS
ISSN:	2050-6414
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language POLYPECTOMY RATE; CANCER; ENDOSCOPIST; INDICATORS; PATIENT; SEGMENT Multiple languages Gastroenterology & Hepatology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/22445