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Table 1 Patient and clinical characteristics by mode of colorectal cancer diagnosis (n = 9626)

From: Factors associated with mode of colorectal cancer detection and time to diagnosis: a population level study

 

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)

 
  1. 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