|
Characteristic
|
Han ethnic
|
Kazakh ethnic
|
|---|
|
(N = 192)
|
(N = 168)
|
|---|
|
No
|
%
|
No
|
%
|
|---|
|
Age at surgery, years
|
|
Median
|
62.5
|
57.4
|
|
Range
|
42–81
|
34–75
|
|
Gender
|
|
Male
|
137
|
71.4
|
108
|
64.3
|
|
Female
|
55
|
28.6
|
60
|
35.7
|
|
Differentiationa
|
|
Well
|
67
|
34.9
|
39
|
23.2
|
|
Moderate + Poor
|
125
|
65.1
|
129
|
76.8
|
|
Invasion depth
|
|
T1–T2
|
79
|
41.1
|
83
|
49.4
|
|
T3–T4
|
113
|
58.9
|
85
|
50.6
|
|
Lymph node metastasis
|
|
No
|
127
|
66.1
|
79
|
47.0
|
|
Yes
|
65
|
33.9
|
89
|
53.0
|
|
TNM stageb
|
|
I + II
|
154
|
80.2
|
111
|
66.1
|
|
III + IV
|
38
|
19.8
|
57
|
33.9
|
-
aHistologic grade was based on WHO classification published in 2010
-
bTNM stage was assessed according to the 7th edition of the AJCC Cancer Staging Manual
