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Dose-response relationship between aspirin use and breast density
| Non-dense N = 15072 | Dense N = 10928 | OR (95% CI) for dense breasts | |
|---|---|---|---|
| Aspirin use | |||
| Users (>300) | 512 (3.4) | 141 (1.3) | 0.62 (0.50 – 0.76) |
| Users (≤300) | 3208 (21.3) | 1250 (11.4) | 0.84 (0.77 – 0.91) |
| Non-users | 11352 (75.3) | 9537 (87.3) | 1.00 (Reference) |
| Ptrend=0.007 |
Test for trend in odds ratios for aspirin use: p-value = 0.007.
