Table 1 Demographic characteristics of breast cancer cases and non-breast cancer controls
Characteristics | Breast cancer (N = 3281) | Non-breast cancer (N = 19,686) | P | ||
|---|---|---|---|---|---|
n | % | n | % | ||
Age group | 1.000 | ||||
20-29 | 25 | 0.8 | 150 | 0.8 | |
30-39 | 311 | 9.5 | 1866 | 9.5 | |
40-49 | 974 | 29.7 | 5844 | 29.7 | |
50-59 | 1052 | 32.1 | 6312 | 32.1 | |
60-69 | 549 | 16.7 | 3294 | 16.7 | |
70-79 | 263 | 8.0 | 1578 | 8.0 | |
≥ 80 | 107 | 3.3 | 642 | 3.3 | |
Age, years (mean ± SD) | 54.2 ± 12 | 54.2 ± 12 | 1.000 | ||
Hypertension | 902 | 27.5 | 5164 | 26.2 | 0.130 |
Hyperlipidemia | 609 | 18.6 | 3216 | 16.3 | 0.002 |
Chronic liver disease | 307 | 9.4 | 1640 | 8.3 | 0.051 |
Chronic kidney disease | 37 | 1.1 | 238 | 1.2 | 0.692 |
Diabetes | 406 | 12.4 | 2299 | 11.7 | 0.252 |
COPD | 153 | 4.7 | 886 | 4.5 | 0.678 |
Autoimmune diseases | 58 | 1.8 | 321 | 1.6 | 0.568 |
Cardiovascular disease | 285 | 8.7 | 1623 | 8.2 | 0.396 |
Stroke | 152 | 4.6 | 1008 | 5.1 | 0.238 |
Endometriosis | 77 | 2.3 | 472 | 2.4 | 0.860 |
Obesity | 30 | 0.9 | 116 | 0.6 | 0.030 |
Colorectal Cancer | 22 | 0.7 | 106 | 0.5 | 0.347 |
Lung cancer | 11 | 0.3 | 49 | 0.2 | 0.370 |
Thyroid cancer | 15 | 0.5 | 48 | 0.2 | 0.031 |
Liver cancer | 18 | 0.5 | 59 | 0.3 | 0.022 |
Cancer of corpus uteri | 6 | 0.2 | 20 | 0.1 | 0.200 |
Ovary cancer | 2 | 0.1 | 19 | 0.1 | 0.533 |
Cervical cancer | 18 | 0.5 | 90 | 0.5 | 0.478 |
Skin cancer | 3 | 0.1 | 17 | 0.1 | 0.927 |
Stomach cancer | 3 | 0.1 | 18 | 0.1 | 1.000 |