| |
Before matching, n (%)
|
P
|
After matching, n (%)
|
P
|
|---|
|
Left colon, n=25,094
|
Right colon, n=45,156
|
Left colon, n=5118
|
Right colon, n=5118
|
|---|
|
Age, years (median)
|
65
|
72
|
<0.01
|
66
|
66
|
0.91
|
|
Age groups
| | |
<0.01
| | |
0.86
|
|
<50
|
3057 (12.18)
|
2770 (6.13)
| |
626 (12.23)
|
608 (11.88)
| |
|
50–69
|
12,296 (49.00)
|
16,350 (36.21)
| |
2428 (47.44)
|
2438 (47.64)
| |
|
≥70
|
9741 (38.82)
|
26,036 (57.66)
| |
2064 (40.33)
|
2072 (40.48)
| |
|
Sex
| | |
<0.01
| | |
0.74
|
|
Male
|
13,451 (53.60)
|
20,708 (45.86)
| |
2720 (53.15)
|
2738 (53.50)
| |
|
Female
|
11,634 (46.36)
|
24,448 (54.14)
| |
2398 (46.85)
|
2380 (46.50)
| |
|
Race
| | |
<0.01
| | |
0.29
|
|
White
|
19,297 (76.90)
|
36,705 (81.28)
| |
3995 (78.06)
|
4041 (78.96)
| |
|
Black
|
2934 (11.69)
|
5382 (11.92)
| |
591 (11.55)
|
586 (11.45)
| |
|
Others
|
2756 (10.98)
|
2935 (6.50)
| |
518 (10.12)
|
484 (9.45)
| |
|
Unknown
|
107 (0.43)
|
134 (0.30)
| |
14 (0.27)
|
7 (0.14)
| |
|
Grade
| | |
<0.01
| | |
0.66
|
|
I
|
2329 (9.28)
|
3858 (8.54)
| |
506 (9.89)
|
525 (10.26)
| |
|
II
|
19,469 (77.58)
|
31,131 (68.94)
| |
3882 (75.85)
|
3892 (76.05)
| |
|
III
|
2802 (11.17)
|
8288 (18.35)
| |
643 (12.56)
|
627 (12.25)
| |
|
IV
|
494 (1.97)
|
1879 (4.16)
| |
87 (1.70)
|
74 (1.44)
| |
|
T
| | |
<0.01
| | |
0.73
|
|
T1
|
4402 (17.54)
|
5879 (13.02)
| |
912 (17.82)
|
895 (17.49)
| |
|
T2
|
4019 (16.02)
|
7938 (17.58)
| |
843 (16.47)
|
855 (16.71)
| |
|
T3
|
13,407 (53.43)
|
25,277 (55.98)
| |
2765 (54.03)
|
2801 (54.73)
| |
|
T4
|
3266 (13.02)
|
6062 (13.42)
| |
598 (11.68)
|
567 (11.07)
| |
|
N
| | |
<0.01
| | |
0.54
|
|
N0
|
15,479 (61.68)
|
29,242 (64.76)
| |
3184 (62.21)
|
3226 (63.03)
| |
|
N1
|
6684 (26.64)
|
10,350 (22.92)
| |
1336 (26.10)
|
1327 (25.93)
| |
|
N2
|
2931 (11.68)
|
5564 (12.32)
| |
598 (11.69)
|
565 (11.04)
| |
|
Stage
| | |
<0.01
| | |
0.85
|
|
I
|
6938 (27.65)
|
11,912 (26.38)
| |
1458 (28.49)
|
1469 (28.70)
| |
|
II
|
8541 (34.04)
|
17,330 (38.38)
| |
1726 (33.72)
|
1757 (34.33)
| |
|
III
|
9615 (38.32)
|
15,914 (35.24)
| |
1934 (37.79)
|
1892 (36.97)
| |
