Brief Article
Copyright ©2011 Baishideng Publishing Group Co.
World J Gastroenterol. Sep 21, 2011; 17(35): 4001-4006
Published online Sep 21, 2011. doi: 10.3748/wjg.v17.i35.4001
Table 2 Detection of all polyps, adenomas, and cancer n (%)
ParametersHD group(n = 450)SD2 group(n = 450)P value
Total polyps detected3974100.73
Non-adenomas196 (51.3)209 (52.0)0.81
Non-advanced adenomas150 (39.3)150 (37.3)0.84
Advanced adenomas34 (8.9)40 (10.0)0.60
Cancer2 (0.5)3 (0.7)1.00
Pathology not identified15 (3.8)8 (2.0)0.14
< 6 mm325 (81.9)340 (82.9)0.96
6-10 mm50 (12.6)44 (10.7)0.45
> 10 mm22 (5.5)24 (5.9)1.00
Size not specified020.50
All patients
With non-adenomas84 (18.7)92 (20.4)0.56
With non-advanced adenomas84 (18.7)83 (18.4)1.00
With advanced adenomas25 (5.6)29 (6.4)0.67
With cancer2 (0.4)3 (0.7)1.00
Polyps per pt, mean (SD1)0.88 (± 1.63)0.91 (± 1.41)0.77
Adenomas per pt, mean (SD1)0.41 (± 1.04)0.42 (± 0.94)0.88
Advanced adenoma per pt, mean (SD1)0.076 (± 0.35)0.089 (± 0.38)0.56
Adenocarcinoma per pt (mean)0.0040.006
Screening patients, n2161730.07
With non-adenomas49 (22.7)36 (20.8)0.81
With non-advanced adenomas41 (19.0)32 (18.5)1.00
With advanced adenomas13 (6.0)14 (8.1)0.55
With cancer1 (0.5)0 (0.0)1.00
Non-screening patients, n2342770.13
With non-adenomas35 (15.0)56 (20.2)0.59
With non-advanced adenomas43 (18.4)51 (18.4)0.21
With advanced adenomas12 (5.1)15 (5.4)1.00
With cancer1 (0.4)3 (1.1)0.63