Table 3.
Subgroup analysis of association between breast cancer and coronary heart disease.
| Subgroups | Non-breast cancer OR | Breast cancer OR (95% CI) | P |
|---|---|---|---|
| Age (year) | |||
| <50 | Reference | 2.11 (2.01–2.22) | <0.001 |
| ≥50 | Reference | 1.24 (1.23–1.24) | <0.001 |
| Education level | |||
| Below high school | Reference | 1.13 (1.11–1.15) | <0.001 |
| High school or equivalent | Reference | 1.16 (1.15–1.17) | <0.001 |
| Above high school | Reference | 1.32 (1.31–1.33) | <0.001 |
| Hypertension | |||
| Yes | Reference | 1.15 (1.15–1.16) | <0.001 |
| No | Reference | 1.56 (1.54–1.58) | <0.001 |
All data were adjusted for age, marital status, race/ethnicity, education level, poverty to income ratio, smoking, alcohol intake, physical activity, BMI, hypertension, hypercholesterolemia, energy, carbohydrate, protein, total fat, fiber, folate, vitamin B12, sodium, and caffeine (except for grouping covariates).