|
Characteristics
|
Breast cancer cases
|
Healthy controls
|
p-value
|
|---|
|
N = 2,110
|
N = 1,493
|
|---|
|
N
|
%
|
N
|
%
|
|---|
|
Ethnicity
|
<0.001
|
|
Chinese
|
1,394
|
66.1
|
1,071
|
71.7
| |
|
Malay
|
406
|
19.2
|
167
|
11.2
| |
|
Indian
|
310
|
14.7
|
255
|
17.1
| |
|
Agea (years)
| |
|
Average age
|
49.5
| |
50.3
| |
0.009
|
|
≤ 30
|
76
|
3.6
|
0
|
0
| |
|
31–40
|
337
|
16.0
|
72
|
4.8
| |
|
41–50
|
751
|
35.6
|
781
|
52.3
| |
|
51–60
|
623
|
29.5
|
501
|
33.6
| |
|
≥ 61
|
323
|
15.3
|
139
|
9.3
| |
|
Family historyb
|
0.001
|
|
Yes
|
506
|
24.0
|
288
|
19.3
| |
|
No
|
1,598
|
75.7
|
1,205
|
80.7
| |
|
No data
|
6
|
0.3
|
0
|
0
| |
|
Pathology profile
| |
|
ER+
|
1,218
|
57.7
| | | |
|
ER-
|
451
|
21.4
| | | |
|
Triple negative
|
242
|
11.5
| | | |
|
No data
|
199
|
9.4
| | | |
-
a Age of diagnosis for breast cancer cases or age of consent for healthy controls
-
b Family history of breast or ovarian cancer in first or second degree relatives
