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. 2013 May 9;108(10):2153–2163. doi: 10.1038/bjc.2013.212

Table 1b. Clinical characteristics of colorectal cancer cases in the CRUMS cohort.

   
Quadruple index
KRAS
BRAF
PIK3CAExon20
PTEN
  Total Negative Positive P-value Wt Mutant P-value Wt Mutant P-value Wt Mutant P-value Normal Loss P-value
Frequency (%)
414
227 (56.0)
178 (44.0)
 
331 (80.5)
80 (19.5)
 
356 (86.8)
54 (13.2)
 
396 (97.8)
9 (2.2)
 
352 (85.9)
58 (14.1)
 
Age, n (%)
 
 
 
0.572
 
 
0.287
 
 
0.017
 
 
0.226
 
 
0.807
<59
68 (16.4)
41 (18.1)
23 (12.9)
 
55 (16.6)
13 (16.3)
 
64 (18.0)
3 (5.6)
 
66 (16.7)
0 (0.0)
 
59 (16.8)
7 (12.1)
 
60–69
82 (19.8)
44 (19.4)
36 (20.2)
 
65 (19.6)
15 (18.8)
 
70 (19.7)
9 (16.7)
 
77 (19.4)
4 (44.4)
 
70 (19.9)
11 (19.0)
 
70–79
162 (39.1)
88 (38.8)
73 (41.0)
 
136 (41.1)
26 (32.5)
 
131 (36.8)
31 (57.4)
 
155 (39.1)
3 (33.3)
 
137 (38.9)
24 (41.4)
 
>80
102 (24.6)
54 (23.8)
46 (25.8)
 
75 (22.7)
26 (32.5)
 
91 (25.6)
11 (20.4)
 
98 (24.7)
2 (22.2)
 
86 (24.4)
16 (27.6)
 
Sex, n (%)
 
 
 
0.179
 
 
0.622
 
 
0.313
 
 
0.209
 
 
0.313
Men
233 (56.3)
135(59.5)
94 (52.8)
 
188 (56.8)
43 (53.8)
 
204 (57.3)
27 (50.0)
 
225 (56.8)
7 (77.8)
 
201 (57.1)
29 (50.0)
 
Women
181 (43.7)
92 (40.5)
84 (47.2)
 
143 (43.2)
37 (46.3)
 
152 (42.7)
27 (50.0)
 
171 (43.2)
2 (22.2)
 
151 (42.9)
29 (50.0)
 
Tumour site, n (%)
 
 
 
<0.001
 
 
0.100
 
 
<0.001
 
 
0.700
 
 
0.682
Right-sided colon
132 (32.2)
46 (20.5)
83 (46.9)
 
98 (30.0)
34 (42.5)
 
88 (25.0)
43 (79.6)
 
124 (31.6)
4 (44.4)
 
133 (32.4)
17 (29.8)
 
Left-sided colon
126 (30.7)
82 (36.6)
42 (23.7)
 
104 (31.8)
21 (26.3)
 
118 (33.5)
6 (11.1)
 
122 (31.1)
2 (22.2)
 
110 (31.5)
16 (28.1)
 
Rectum
152 (37.1)
96 (42.9)
52 (29.4)
 
125 (38.2)
25 (31.3)
 
146 (41.5)
5 (9.3)
 
146 (37.2)
3 (33.3)
 
126 (36.1)
24 (42.1)
 
Stage, n (%)
 
 
 
0.162
 
 
0.030
 
 
0.744
 
 
0.293
 
 
0.800
I
63 (15.5)
41 (18.6)
19 (10.8)
 
57 (17.6)
4 (5.1)
 
55 (15.8)
7 (13.0)
 
60 (15.4)
2 (25.0)
 
53 (15.4)
10 (17.5)
 
II
164 (40.4)
88 (39.8)
71 (40.3)
 
131 (40.4)
32 (40.5)
 
137 (39.4)
24 (44.4)
 
152 (39.1)
5 (62.5)
 
143 (41.4)
20 (35.1)
 
III
87 (21.4)
44 (19.9)
43 (24.4)
 
67 (20.7)
20 (25.3)
 
74 (21.3)
13 (24.1)
 
87 (22.4)
0 (0.0)
 
71 (20.6)
14 (24.6)
 
IV
92 (22.7)
48 (21.7)
43 (24.4)
 
69 (21.3)
23 (29.1)
 
82 (23.6)
10 (18.5)
 
90 (23.1)
1 (12.5)
 
78 (22.6)
13 (22.8)
 
Histology type, n (%)
 
 
 
0.023
 
 
0.515
 
 
<0.001
 
 
0.239
 
 
0.852
Non-mucinous
348 (85.3)
198 (88.8)
142 (80.7)
 
275 (84.6)
70 (87.5)
 
310 (88.6)
35 (64.8)
 
333 (85.2)
8 (100.0)
 
295 (85.0)
49 ( 86.0)
 
Mucinous 60 (14.7) 25 (11.2) 34 (19.3)   50 (15.4) 10 (12.5)   40 (11.4) 19 (32.2)   58 (14.8) 0 (0.0)   52 (15.0) 8 (14.0)  

Abbreviations: CRUMS=Colorectal Cancer in Umeå Study; Wt=wild-type.

Following numbers of missing cases were present in CRUMS: Quadruple Index, 9; KRAS mutation status, 3; BRAF mutation status, 4; PIK3CA mutation status, 9; PTEN mutation status, 4; Tumour site, 4; Stage, 8; Histology type, 6; Adjuvant chemotherapy, 6; Preoperative, 3. Kruskall–Wallis test was used for continuous variables, χ2-test or Fisher's exact test used for categorical variables.