|  | 1991–1994 | 1997–2000 | p value2 |
---|---|---|---|---|
 |  | N (%)3 | N (%) |  |
NSAIDs/aspirin: | No | 938 (60.8) | 692 (57.6) | 0.02 |
Yes | 605 (39.2) | 510 (42.4) | Â | |
HRT use: | No | 364 (64.4) | 188 (49.3) | <0.01 |
Yes | 201 (35.6) | 193 (50.7) | Â | |
BMI1 | ≤ 23 | 287 (18.8) | 173 (14.5) | <0.01 |
24–25 | 272 (17.8) | 174 (14.6) |  | |
26–29 | 507 (33.2) | 427 (35.9) |  | |
≥ 30 | 461 (30.2) | 417 (35.0) |  |