Variables
|
Total
|
OPC (N = 752)
|
Non-OPC (N = 777)
|
---|
No.
|
SPM (N)
|
%
|
p*
|
SPM (N)
|
%
|
p*
|
---|
Total patients
|
1529
|
42
|
5.6
| |
82
|
10.6
| |
Age
| | | |
0.004
| | |
0.024
|
≤ Median (57 years)
|
770
|
12
|
28.6
| |
33
|
40.2
| |
> Median (57 years)
|
759
|
30
|
71.4
| |
49
|
59.8
| |
Sex
| | | |
0.546
| | |
0.170
|
Male
|
1186
|
35
|
83.3
| |
62
|
75.6
| |
Female
|
343
|
7
|
16.7
| |
20
|
24.4
| |
Tobacco smoking
| | | |
0.010
| | |
0.037
|
Ever
|
1009
|
22
|
52.4
| |
69
|
84.1
| |
Never
|
520
|
20
|
47.6
| |
13
|
15.9
| |
Alcohol drinking
| | | |
0.813
| | |
0.005
|
Ever
|
1099
|
30
|
71.4
| |
69
|
84.1
| |
Never
|
430
|
12
|
28.6
| |
13
|
15.9
| |
Ethnicity
| | | |
0.598
| | |
0.028
|
Non-Hispanic White
|
1333
|
38
|
90.5
| |
60
|
73.2
| |
Other
|
196
|
4
|
9.5
| |
22
|
26.8
| |
Index cancer stage
| | | |
0.240
| | |
0.035
|
I or II
|
386
|
5
|
11.9
| |
26
|
31.7
| |
III or IV
|
1143
|
37
|
88.1
| |
56
|
68.3
| |
Treatmenta
| | | |
0.511
| | |
0.111
|
S only
|
253
|
0
|
0.0
| |
19
|
23.2
| |
S/C/X
|
335
|
4
|
9.5
| |
30
|
36.6
| |
X/C
|
941
|
38
|
90.5
| |
33
|
40.2
| |
- *χ2 test for differences between patients with and without SPM
-
aS, surgery, C, chemotherapy, and X, radiation