Table 1: Distribution of
potential risk factors, prognostic and predictive factors in ever and never use
of oral contraceptives.
|
|
|
Oral Contraceptives |
|
|
|
|
|
|
Ever |
Never |
Significance |
Missing |
|
|
Total:
765 |
400 |
364 |
|
N =
1 |
|
|
|
Column
percent (median, range and n(cases) in
italics) |
|
||
|
Age
at breast cancer diagnosis |
|
|
|
|
|
|
Median |
|
61 (45-81) |
66 (48-84) |
<
0.001a |
0 |
|
Stratified
age groups |
|
|
|
|
|
|
40-55 56-70 71- |
|
21.5
(86) 66.8
(267) 11.8
(47) |
8.2
(30) 56.0
(204) 35.7
(130) |
- - - |
0 0 0 |
|
BMI |
|
|
|
|
|
|
Median |
|
24.38 |
25.46 |
<
0.001a |
0 |
|
Socioeconomic
status |
|
|
|
|
|
|
Civil
servant Worker Businessman |
|
67.1 27.6 5.3 |
52.8 41.9 5.3 |
<
0.001b |
10 |
|
Size
of tumor |
|
|
|
|
|
|
Median |
|
15 (1-171) |
15 (1-231) |
0.66a |
27 |
|
Lymph
glandular involvement |
|
|
|
|
|
|
Yes No |
|
33.5 66.5 |
32.5 67.5 |
0.78b |
93 |
|
Grade |
|
|
|
|
|
|
I II III |
|
28.1 43.7 28.1 |
26.8 52.6 20.6 |
0.03b |
74 |
|
PgR |
|
|
|
|
|
|
High
Low |
|
43.8 56.2 |
52.5 47.5 |
0.04b |
223 |
|
ER |
|
|
|
|
|
|
High Low |
|
86.2 13.8 |
87.6 12.4 |
0.60b |
150 |
|
HER2 |
|
|
|
|
|
|
Moderate/Strong Negative/Weak |
|
33.9 66.1 |
27.6 72.4 |
0.11b |
213 |
|
P27 |
|
|
|
|
|
|
High
Low |
|
67.7 32.3 |
69.2 30.8 |
0.69b |
166 |
|
Ki67 |
|
|
|
|
|
|
High
Low |
|
31.2 68.8 |
29.6 70.4 |
0.69b |
187 |
aMann
Whitney U test
bPearson
Chi square test