Table 3. Median Cumulative Number of Polyps per Person during Follow-Up.

	HP	SAa	Adenoma	Total polyps
Initial colonoscopy	5.0 (0–21)	0 (0–2)	1 (0–8)	6.0 (0–23)
Colonoscopy at diagnosisb	10.5 (4–26)	0 (0–2)	1 (0–29)	13.5 (5–56)
Last surveillance colonoscopy	14.0 (5–55)	0.5 (0–5)	2 (0–29)	19.0 (5–82)

Values are presented as median (range).

^aSA includes sessile serrated adenoma and traditional serrated adenoma.

^bColonoscopy at which the diagnosis of serrated polyposis was made.

HP, hyperplastic polyp; SA, serrated adenoma.