Table 1

Patient demographics in the cancer, polyp, and control groups

Cancers (n=57)Polyps (n=29)Controls (n=53)
HP+veHP−veHP+veHP−veHP+veHP−ve
Number342318112924
Sex (M:F)22:1210:1311:7 8:3 8:2113:11
Mean age (y)697066635556
 (range)42–8448–8242–8646–7527–7935–76
Location
 Caecum 4 4 2
 Ascending colon 2 2 2
 Hepatic flexure 1
 Transverse colon 5
 Splenic flexure 1 1
 Descending colon 4
 Sigmoid colon 8 7 7 8
 Rectosigmoid 2 1
 Rectum15 9 5 4
Dukes' stage
 A 2 5
 B14 9
 C1611
 Inoperable 2
Type of polyp
 Tubulovillous adenoma1311
 Tubular adenoma 9 2
Degree of dysplasia
 Mild10
 Moderate1012
 Severe 2 1
Diagnosis in controls
 Normal2320
 Diverticular disease 6 4