. Author manuscript; available in PMC: 2013 Nov 25.

Published in final edited form as: Gastrointest Endosc. 2012 Mar;75(3):10.1016/j.gie.2011.12.012. doi: 10.1016/j.gie.2011.12.012

Table 3.

Performance Measures in men according to endoscopists’ polypectomy rate, in quartiles

Measure	Endoscopist Group
	Quartile 1	Quartile 2	Quartile 3	Quartile 4
	PR ≤ 39%	PR 40–50%	PR 51–58%	PR ≥59%
Mean PR, %	29.2	44.7^*	53.4^*	69.7^*
Mean ADR, %	19.4	28.2^*	33.4^*	44.6^*
Mean Advanced Adenoma rate, %	4.6	5.4	5.8	9.6^*
Mean No. of polyps per subject	0.8	0.74^*	0.96^*	1.6^*

Indicates statistical significance, compared to quartile 1 values

P values were calculated using the fourth quartile as the reference group.

Values refer to the MEAN value for all the endoscopists in each polypectomy quartile Advanced adenomas defined as adenomas ≥ 10mm or with villous features, high grade dyplasia, or adenocarcinoma