Table 3.

Polyp, adenoma, adenoma > 5 mm, and advanced adenoma detection rates of follow-up colonoscopy according to BBPS score.

C2 polyp detection	C1 BBPS		P value
	6	7–9
	N = 529	N = 1823
Polyp	385 (72.8)	1251 (68.6)	0.067
Adenoma	281 (53.1)	897 (49.2)	0.113
Adenoma > 5 mm	66 (12.5)	181 (9.9)	0.092
Advanced adenoma	16 (3.0)	47 (2.6)	0.576
Polyp No	1.84 ± 1.89	1.56 ± 1.73	0.001*
Adenoma No	1.02 ± 1.36	0.88 ± 1.27	0.034*
Adenoma > 5 mm No	0.16 ± 0.46	0.13 ± 0.44	0.083
Advanced adenoma No	0.04 ± 0.23	0.03 ± 0.19	0.522

Values are expressed as n (%), or mean ± standard deviation.

BBPS, Boston bowel preparation scale; C1, baseline colonoscopy; C2, follow-up colonoscopy No, number.

*P < 0.05.