Polyp detection rates using magnification with narrow band imaging and white light

Table 1 Demographics, adequacy of bowel preparation, procedure-related times and polyps/adenomas detection

	Group A(WL→NBI)	Group B(NBI→WL)	Group C(WL→WL)	P < 0.05
Age (mean ± SEM) in years	62.2 ± 0.7	59.3 ± 0.6	62.0 ± 0.7
Gender
Men	99	98	98
Women	1	2	2
Cecal intubation time (mean ± SEM) in minute	4.9 ± 0.3	6.5 ± 0.4	6.5 ± 0.4	A vs C A vs B
Withdrawal time (mean ± SEM) in minute	18.9 ± 0.7	15.7 ± 0.4	17.6 ± 0.6	A vs B C vs B
Total procedure time (mean ± SEM) in minute	23.8 ± 0.7	22.2 ± 0.5	24.1 ± 0.7	B vs C
Bowel preparation
Excellent	36 (%)	18 (%)	22 (%)
Good	56 (%)	74 (%)	67 (%)
Fair adequate	8 (%)	8 (%)	11 (%)
Patients with polyps	78	67	73
Total polyps detected	211	147	219
Polyps/patient with polyps	2.7	2.2	3.0
Of patients with adenomas	47	47	57
Total adenomas detected	97	76	111
Adenomas/ patient with adenomas	2.1	1.6	1.9

WL: White light; NBI: Narrow band imaging.