Table 6.

Risk for high risk adenoma and large SP stratified by baseline colonoscopy findings in the New Hampshire Colonoscopy Registry^*

Baseline Finding	Surveillance Colonoscopy Finding
	HRA, % (n)	SP ≥ 10 mm, % (n)
No adenoma	4.8 (116/2396)	0.7 (18/2396)
LRA**	9.7 (96/991)	0.5 (5/991)
HRA	18.2 (11/603)	1.0 (6/603)
LRA + SSP**	18.4 (9/49)	8.2 (4/49)
HRA + SSP	46.4 (13/28)	3.6 (1/28)
SSA/P	2.9 (3/104)	9.6 (10/104)
SP ≥10 mm	3.1 (2/65)	12.3 (8/65)

^*adapted from Anderson JC et al. Gastroenterology 2018;154:117–127;

^**previously unpublished data provided through personal communication 3/14/18 from Anderson JC, Butterly LF, Robinson CM, with permission.

^**Included TSA in SSA/P group; LRA=1 to 2 adenomas <10 mm in size; SP = hyperplastic, SP, or TSA; HRA= advanced neoplasia or >2 adenomas