Skip to main content

Table 1 Demographics and tumor characteristics of patients diagnosed with stage I to IV CRC

From: Does geography influence the treatment and outcomes of colorectal cancer? A population-based analysis

  

RHA group

Variable

Overall (N = 2,086)

Winnipeg (n = 1,206)

North Manitoba (n = 65)

South Manitoba (n = 496)

Middle Manitoba (n = 319)

P value

Mean age in years (range)

70 ± 13.00

70 ± 13.21

65 ± 13.06

70 ± 13.08

71 ± 11.80

0.004

(20 to 103)

(25 to 103)

(31 to 92)

(20 to 94)

(39 to 94)

Age group (n (%))

      

  >70 years

1,182 (56.66)

695 (57.63)

25 (38.46)

277 (55.85)

185 (57.99)

0.022

  <70 years

904 (43.34)

511 (42.37)

40 (61.54)

219 (44.15)

134 (42.01)

 

Age quartilesa (n (%))

      

  Quartile 1

542 (25.98)

324 (26.87)

27 (41.54)

129 (26.01)

62 (19.44)

0.004

  Quartile 2

522 (25.02)

282 (23.38)

17 (26.15)

120 (24.19)

103 (32.29)

 

  Quartile 3

530 (25.41)

312 (25.87)

12 (18.46)

128 (25.81)

78 (24.45)

 

  Quartile 4

492 (23.59)

288 (23.88)

9 (13.85)

119 (23.99)

76 (23.82)

 

Gender (n (%))

      

  Female

963 (46.16)

576 (47.76)

29 (44.62)

223 (44.96)

135 (42.32)

0.323

  Male

1,123 (53.84)

630 (52.24)

36 (55.38)

273 (55.04)

184 (57.68)

 

Diagnosis year (n (%))

      

  2004

706 (33.84)

413 (34.25)

20 (30.77)

164 (33.06)

109 (34.17)

0.932

  2005

671 (32.17)

389 (32.26)

25 (38.46)

156 (31.45)

101 (31.66)

 

  2006

709 (33.99)

404 (33.50)

20 (30.77)

176 (35.48)

109 (34.17)

 

Site (n (%))

      

  Colon

1,376 (65.96)

788 (65.34)

44 (67.69)

336 (67.74)

208 (65.20)

0.486

  Rectosigmoid

202 (9.68)

116 (9.62)

7 (10.77)

54 (10.89)

25 (7.84)

 

  Rectum

508 (24.35)

302 (25.04)

14 (21.54)

106 (21.37)

86 (26.96)

 

AJCC stage (n (%))

      

  I

403 (19.32)

226 (18.74)

7 (10.77)

114 (22.98)

56 (17.55)

0.069c

  II

575 (27.56)

334 (27.69)

19 (29.23)

139 (28.02)

83 (26.02)

 

  III

610 (29.24)

364 (30.18)

15 (23.08)

134 (27.02)

97 (30.41)

 

  IV

439 (21.05)

255 (21.14)

20 (30.77)

95 (19.15)

69 (21.63)

 

  Unknown/NAb (n (%))

59 (2.83)

27 (2.24)

4 (6.15)

14 (2.82)

14 (4.39)

 
  1. aQuartile 1: age 20 years to 61 years, quartile 2: age greater than 61 years to 72 years, quartile 3: age greater than 72 years to 80 years, and quartile 4: age greater than 80 years to 103 years; bone or more elements of the AJCC stage is missing or staging scheme is not applicable; cusage of Monte-Carlo estimation of exact P value instead of direct P value computations, since the sample size is large and some cell values are less than five. AJCC American Joint Committee on Cancer, CRC colorectal cancer, NA not applicable, RHA regional health authority.
Back to article page

World Journal of Surgical Oncology

ISSN: 1477-7819

Contact us