Table 2 Frequency of occurrence of diagnostic and procedure codes in provincial administrative databases (N = 1,230)

Procedures in the past 4 years

 Colonoscopy

267

21.7

 Sigmoidoscopy

76

6.2

 Polypectomy

114

9.3

 Double contrast barium enema

65

5.3

Symptoms in the past year

 Rectal bleeding

95

7.7

 Diarrhea

50

4.1

 Vomiting

7

0.6

 Weight loss

8

0.7

 Anemia

86

7

Gastrointestinal conditions in the past 5 years

 Colorectal cancer

65

5.3

 Colorectal polyps

205

16.7

 Inflammatory bowel disease

48

3.9

Hospitalizations in the past 5 years

 Large bowel diseases

32

2.6

 Large bowel surgery

26

2.1