Table 4.

Relationship between the presence of ACFs and the location of adenoma/CRC

LocationNACF prevalence,a %ACF number,b mean ± SD
Adenoma cases
 Including distal colon304886.1 ± 6.9
 Only in proximal colon68886.4 ± 7.6
P0.870.73
CRC cases
 Distal colon779610.4 ± 7.6
 Proximal colon29939.3 ± 8.6
P0.520.26

NOTE: The distal colon was defined as the region of colonic lesion from the splenic flexure to the dentate line. The proximal colon was defined as the region of colonic lesion from the cecum to the splenic flexure.

  • aP values were calculated using the χ2 test.

  • bP values were calculated using the Mann–Whitney U test.