. Author manuscript; available in PMC: 2020 Sep 1.

Published in final edited form as: Gastrointest Endosc. 2019 May 22;90(3):495–501. doi: 10.1016/j.gie.2019.05.029

Table 4.

The absolute and adjusted risk^* for metachronous advanced adenomas in individuals with index adenomas as classified by current guideline categories, stratified by adenoma size, in patients with at least 36 months between index and surveillance colonoscopy

Index findings	Follow up time (mean months ± S.D.)	^*Adjusted Risk (95% CI)	P value
1 −2 adenomas < 5 mm (both diminutive)	62.0 ± 16.0	1.0 Reference	…
1–2 adenomas < 1cm** (one or more small)	61.1 ±18.2	1.51 (1.08–2.09)	0.01
3–10 adenomas < 5 mm (all diminutive)	47.1 ±13.0	1.72(1.01–2.95)	0.05
3–10 adenomas < 1 cm (one or more small)	47.4 ± 13.5	2.00(1.25–3.18)	0.004
Advanced adenoma	53.9 ± 20.5	2.53(1.82–3.53)	0.0001

Adjusted for age, sex, BMI, family history of CRC, smoking, presence or serrated polyps and years since index exam.