BACKGROUND: The adenoma detection rate (ADR) is a quality benchmark for colonoscopy. Many practices find it difficult to determine the ADR because it requires a combination of endoscopic and histologic findings. It may be possible to apply a conversion factor to estimate the ADR from the polyp detection rate (PDR). OBJECTIVE: To create a conversion factor that can be used to accurately estimate the ADR from the PDR. DESIGN: This was a retrospective study of colonoscopies performed by board-certified gastroenterologists to determine the average adenoma to polyp detection rate quotient (APDRQ) for all endoscopists, individually and as a group. SETTING: Academic group practice. INTERVENTION: The group average APDRQ was used as a conversion factor for the endoscopist's PDR to estimate the ADR. MAIN OUTCOME MEASUREMENTS: The strength of the relationship between the estimated ADR and the actual ADR determined by Pearson's correlation coefficient. RESULTS: A total of 3367 colonoscopies performed by 20 staff gastroenterologists were included. The average ADR for all indications, all patient age groups, and both sexes was 0.17 (range 0.09-0.27, standard deviation 0.05). The average APDRQ was 0.64 (range 0.46-1.00, standard deviation 0.13). The correlation between the estimated ADR and the actual ADR was 0.85 (95% CI, 0.65-0.93, P = .000001). LIMITATIONS: Retrospective study in 1 practice setting with all patient types. CONCLUSIONS: The use of a conversion factor can accurately estimate the ADR from the PDR. Further study is needed to determine whether such a conversion factor can be applied to different practice settings and patient groups.
BACKGROUND: The adenoma detection rate (ADR) is a quality benchmark for colonoscopy. Many practices find it difficult to determine the ADR because it requires a combination of endoscopic and histologic findings. It may be possible to apply a conversion factor to estimate the ADR from the polyp detection rate (PDR). OBJECTIVE: To create a conversion factor that can be used to accurately estimate the ADR from the PDR. DESIGN: This was a retrospective study of colonoscopies performed by board-certified gastroenterologists to determine the average adenoma to polyp detection rate quotient (APDRQ) for all endoscopists, individually and as a group. SETTING: Academic group practice. INTERVENTION: The group average APDRQ was used as a conversion factor for the endoscopist's PDR to estimate the ADR. MAIN OUTCOME MEASUREMENTS: The strength of the relationship between the estimated ADR and the actual ADR determined by Pearson's correlation coefficient. RESULTS: A total of 3367 colonoscopies performed by 20 staff gastroenterologists were included. The average ADR for all indications, all patient age groups, and both sexes was 0.17 (range 0.09-0.27, standard deviation 0.05). The average APDRQ was 0.64 (range 0.46-1.00, standard deviation 0.13). The correlation between the estimated ADR and the actual ADR was 0.85 (95% CI, 0.65-0.93, P = .000001). LIMITATIONS: Retrospective study in 1 practice setting with all patient types. CONCLUSIONS: The use of a conversion factor can accurately estimate the ADR from the PDR. Further study is needed to determine whether such a conversion factor can be applied to different practice settings and patient groups.
Authors: Vivian Ussui; Susan Coe; Cynthia Rizk; Julia E Crook; Nancy N Diehl; Michael B Wallace Journal: Am J Gastroenterol Date: 2014-09-30 Impact factor: 10.864
Authors: Douglas K Rex; Philip S Schoenfeld; Jonathan Cohen; Irving M Pike; Douglas G Adler; M Brian Fennerty; John G Lieb; Walter G Park; Maged K Rizk; Mandeep S Sawhney; Nicholas J Shaheen; Sachin Wani; David S Weinberg Journal: Am J Gastroenterol Date: 2014-12-02 Impact factor: 10.864
Authors: Michal F Kaminski; Siwan Thomas-Gibson; Marek Bugajski; Michael Bretthauer; Colin J Rees; Evelien Dekker; Geir Hoff; Rodrigo Jover; Stepan Suchanek; Monika Ferlitsch; John Anderson; Thomas Roesch; Rolf Hultcranz; Istvan Racz; Ernst J Kuipers; Kjetil Garborg; James E East; Maciej Rupinski; Birgitte Seip; Cathy Bennett; Carlo Senore; Silvia Minozzi; Raf Bisschops; Dirk Domagk; Roland Valori; Cristiano Spada; Cesare Hassan; Mario Dinis-Ribeiro; Matthew D Rutter Journal: United European Gastroenterol J Date: 2017-03-16 Impact factor: 4.623
Authors: Cynthia W Ko; V Paul Doria-Rose; Michael J Barrett; Aruna Kamineni; Lindsey Enewold; Noel S Weiss Journal: Int J Colorectal Dis Date: 2019-05-31 Impact factor: 2.571