Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota 55905, USA.
Gastrointest Endosc. 2011 Mar;73(3):493-7. doi: 10.1016/j.gie.2011.01.005.
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).
To create a conversion factor that can be used to accurately estimate the ADR from the PDR.
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.
Academic group practice.
The group average APDRQ was used as a conversion factor for the endoscopist's PDR to estimate the ADR.
The strength of the relationship between the estimated ADR and the actual ADR determined by Pearson's correlation coefficient.
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).
Retrospective study in 1 practice setting with all patient types.
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.
腺瘤检出率（ADR）是结肠镜检查的质量基准。许多实践发现，由于需要结合内镜和组织学发现，确定 ADR 具有一定难度。可能可以应用转换系数，根据息肉检出率（PDR）来估计 ADR。
创建一个转换系数，以便能够根据 PDR 准确估计 ADR。
这是一项对由经委员会认证的胃肠病学家进行的结肠镜检查进行的回顾性研究，目的是确定所有内镜医生的平均腺瘤与息肉检出率比值（APDRQ），分别单独评估和作为一个整体评估。
学术组实践。
将组平均 APDRQ 用作内镜医生 PDR 的转换系数，以估计 ADR。
通过 Pearson 相关系数确定估计的 ADR 与通过实际 ADR 之间关系的强度。
共纳入 20 名工作人员胃肠病学家进行的 3367 例结肠镜检查。所有适应证、所有患者年龄组和男女的平均 ADR 为 0.17（范围为 0.09-0.27，标准差为 0.05）。平均 APDRQ 为 0.64（范围为 0.46-1.00，标准差为 0.13）。估计的 ADR 与实际 ADR 之间的相关性为 0.85（95%CI，0.65-0.93，P =.000001）。
在 1 个实践环境中对所有患者类型进行的回顾性研究。
使用转换系数可以根据 PDR 准确估计 ADR。需要进一步研究，以确定这种转换系数是否可以应用于不同的实践环境和患者群体。
