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. Author manuscript; available in PMC: 2015 Aug 13.
Published in final edited form as: JAMA. 2014 Aug 13;312(6):606–615. doi: 10.1001/jama.2014.8266

Table 2. Findings at screening and endoscopy key figures.

Results in numbers (percentages) which include findings at flexible sigmoidoscopy and colonoscopy of screen-positive individuals in screening-compliers.

Flexible sigmoidoscopy (n=6,692) Flexible sigmoidoscopy and FOBT (n=6,263) P-value
Any adenomaa 1,156 (17.3) 1,054 (16.9) 0.5
Advanced adenomaa 304 (4.6) 278 (4.5) 0.8
Colorectal cancer 21 (0.3) 20 (0.3) 1.0
Referred for colonoscopy 1,303 (19.5) 1,336 (21.3) 0.008
Attended colonoscopy examination 1,249 (18.7) 1,271 (20.3) 0.02
Cecum intubationb 1,130 (90.5) 1,140 (89.7) 0.3
Number of colonscopies 1403 1413 0.2
Complications with flexible sigmoidoscopy 0 0 -
Complications with colonoscopyc 5 5 0.8
Recommended surveillance 670 (10.1) 598 (9.6) 0.4
a

Not included individuals with screen-detected colorectal cancer. Advanced adenoma: Adenoma with size 10 mm or lagrer, with villous histology or with high-grade dysplasia.

b

Of thos who attended the colonoscopy examination.

c

Perforations (n=6) and admittance to hospital for post-polypectomy bleeding (n=4).

FOBT: Fecal occult blood test