Table 2 Study sample characteristics and univariate associations with post-operative colonoscopy

Sex

   Male

2188 (56%)

0.57

   Female

1730 (44%)

0.63

0.021

Age group

   30 – 54

559 (14%)

0.75

   55 – 69

1567 (40%)

0.74

   70 – 79

1161 (30%)

0.50

   > 80

631 (16%)

0.28

<0.0001

Place of residence

   Urban

582 (15%)

0.60

   Rural

3336 (85%)

0.60

0.6

Tumor site

   Colon

2891 (74%)

0.54

   Rectum

1027 (26%)

0.72

<0.0001

Stage

   1

876 (22%)

0.65

   2

1880 (48%)

0.57

   3

1162 (30%)

0.63

0.0001

Pre-operative colonoscopy

   Yes

1646 (42%)

0.69

   No

2272 (58%)

0.54

<0.0001

Procedure type

   Resection

3363 (86%)

0.62

   Abdominoperineal resection

555 (14%)

0.47

<0.0001

Site of surgery

   Calgary

1270 (32%)

0.58

   Edmonton

1733 (44%)

0.63

   Other Major City

607 (15%)

0.60

   Other

308 (8%)

0.55

<0.0001

Adjuvant therapy

   Yes

1049 (27%)

0.72

   No

2869 (93%)

0.57

<0.0001

Cancer clinic visits

   None

1691 (43%)

0.52

   1 – 4

1434 (37%)

0.63

   ≥ 5

793 (20%)

0.74

<0.0001

Surgeon performs colonoscopies

   Yes

1838 (47%)

0.68

   No

2080 (53%)

0.54

<0.0001