Appendix E.

Diagnostic Colonoscopy Quality Metrics Over Time

Percent Good/Excellent Bowel Prep
	Male				Female
	2000–2004	2005–2009	2010–2014	p-value	2000–2004	2005–2009	2010–2014	p-value
20–39	79.8	78.8	85.2	<.0001	81.8	82.0	86.7	<.0001
40–49	77.0	76.8	83.1	<.0001	79.3	79.2	83.9	<.0001
50–59	75.8	73.4	78.6	<.0001	79.3	77.3	81.1	0.016
60–69	72.0	70.6	76.5	<.0001	77.4	76.5	81.6	<.0001
70–79	70.1	68.0	75.5	<.0001	75.6	73.9	80.6	<.0001
>79	67.3	66.1	73.7	<.0001	70.5	70.4	79.2	<.0001
Colonoscopy Polyp Detection Rate
	Male				Female
	2000–2004	2005–2009	2010–2014	p-value	2000–2004	2005–2009	2010–2014	p-value
20–39	18.3	17.8	18..9	0.331	12.8	12.7	13.8	0.036
40–49	31.0	31.6	34.7	<.0001	21.4	22.7	23.9	<.0001
50–59	37.2	38.6	41.9	<.0001	25.4	26.5	31.2	<.0001
60–69	40.4	41.2	45.7	<.0001	29.1	29.9	33.7	<.0001
70–79	39.5	40.1	45.2	<.0001	29.5	30.5	34.9	<.0001
>79	37.1	37.4	39.4	0.029	29.5	30.4	33.5	<.0001
Colonoscopy Polyp Detection Rate 2+
	Male				Female
	2000–2004	2005–2009	2010–2014	p-value	2000–2004	2005–2009	2010–2014	p-value
20–39	4.4	3.9	4.4	0.912	2.3	2.2	2.7	0.136
40–49	10.1	9.9	11.9	<.0001	5.6	5.5	6.3	0.014
50–59	14.3	14.7	17.5	<.0001	7.4	7.3	9.5	<.0001
60–69	16.6	16.6	20.9	<.0001	9.2	9.0	11.1	<.0001
70–79	16.9	16.8	20.5	<.0001	9.7	9.7	12.1	<.0001
>79	15.0	14.6	16.0	0.329	9.7	10.3	11.9	0.000
Colonoscopy Polyp Detection Rate > 9mm
	Male				Female
	2000–2004	2005–2009	2010–2014	p-value	2000–2004	2005–2009	2010–2014	p-value
20–39	3.7	2.7	3.0	0.009	2.0	1.9	1.9	0.603
40–49	6.3	6.0	6.5	0.758	3.9	3.9	4.2	0.208
50–59	8.5	4.0	9.1	0.184	4.8	4.8	5.5	0.002
60–69	11.2	9.8	11.6	0.826	6.6	5.9	6.9	0.667
70–79	12.1	11.1	13.4	0.084	8.1	7.8	8.7	0.239
>79	14.0	12.7	14.1	0.573	11.1	10.6	12.2	0.189