| |
Urgent
|
Screen-detected
|
Symptomatic
|
p-valuea
|
|---|
|
(n = 2428)
|
(n = 3083)
|
(n = 4115)
| |
|---|
|
n (%)
|
n (%)
|
n (%)
| |
|---|
|
Patient characteristics
|
|
Age at diagnosis
|
|
< 50
|
228 (9)
|
211 (7)
|
383 (9)
|
0.0429
|
|
50–59
|
461 (19)
|
519 (17)
|
757 (18)
| |
|
60–69
|
586 (19)
|
792 (26)
|
1015 (25)
| |
|
70–79
|
599 (25)
|
1011 (33)
|
1230 (30)
| |
|
≥ 80
|
554 (23)
|
550 (18)
|
730 (18)
| |
|
Residential zonesb
|
|
Calgary
|
804 (33)
|
1084 (35)
|
1226 (30)
|
<.0001
|
|
Central
|
334 (14)
|
357 (12)
|
741 (18)
| |
|
Edmonton
|
836 (34)
|
1088 (35)
|
1320 (32)
| |
|
North
|
274 (11)
|
292 (9)
|
463 (11)
| |
|
South
|
180 (7)
|
262 (9)
|
364 (9)
| |
|
Median annual household income
|
|
< $45389
|
647 (27)
|
705 (23)
|
993 (24)
|
0.4062
|
|
$45389 - $59119
|
590 (24)
|
681 (22)
|
1074 (26)
| |
|
$59119 - $80148
|
595 (25)
|
789 (26)
|
964 (23)
| |
|
≥ $80148
|
547 (23)
|
837 (27)
|
962 (23)
| |
|
Missing
|
49 (2)
|
71 (2)
|
122 (3)
| |
|
Clinical characteristics
|
|
Anatomic site
|
|
Colon
|
1672 (69)
|
1943 (63)
|
2471 (60)
|
<.0001
|
|
Rectum
|
756 (31)
|
1140 (37)
|
1644 (40)
| |
|
Stage at diagnosis
|
|
I
|
280 (12)
|
781 (25)
|
886 (22)
|
<.0001
|
|
II
|
670 (28)
|
831 (27)
|
1150 (28)
| |
|
III
|
701 (29)
|
879 (29)
|
1191 (29)
| |
|
IV
|
777 (32)
|
592 (19)
|
888 (22)
| |
|
Charlson comorbidity score
|
|
0
|
1359 (56)
|
1985 (64)
|
2528 (61)
|
0.0025
|
|
1
|
601 (25)
|
675 (22)
|
893 (22)
| |
|
≥ 2
|
468 (19)
|
423 (14)
|
694 (17)
| |
|
Gastrointestinal comorbidities
|
|
Yes
|
544 (22)
|
827 (27)
|
1062 (26)
|
0.0005
|
|
No
|
1884 (78)
|
2256 (73)
|
3053 (74)
| |
-
aJonckheere-Terpstra trend test for ordinal variables (age, income, comorbidity score and stage at diagnosis) and Chi-square test for the other categorical variables were used to compare proportions. bOne patient with unknown residential zone was excluded from this calculation
