Table 4.
Frequency of aspirin use stratified by reason for use and odds ratios for pancreatic cancer
| Aspirin use for heart disease prevention |
Aspirin use for other reasons | |||||
|---|---|---|---|---|---|---|
| Cases/ Controls |
OR* (95% CI) | P value | Cases/ Controls |
OR* (95% CI) | P value | |
| Aspirin use | ||||||
| <1 day per month | 393/493 | 1.00 | 0.013 | 393/493 | 1.00 | 0.026 |
| ≥1 day per month | 106/180 | 0.67 (0.49-0.92) | 241/370 | 0.77 (0.61-0.97) | ||
| Aspirin: frequency of usage | ||||||
| <1 day per month | 393/493 | 1.00 | 0.020 | 393/493 | 1.00 | 0.030 |
| 1-4 days per month | 11/19 | 0.93 (0.40-2.19) | 168/243 | 0.86 (0.66-1.11) | ||
| 2-5 days per week | 4/17 | 0.18 (0.05-0.69) | 38/62 | 0.74 (0.45-1.21) | ||
| 6+ days per week | 91/144 | 0.71 (0.51-0.99) | 35/65 | 0.50 (0.31-0.81) | ||
| Aspirin: typical dosage | ||||||
| None | 235/270 | 1.00 | 0.102 | 235/270 | 1.00 | 0.115 |
| 1-2 tablets per day | 107/175 | 0.68 (0.48-0.97) | 281/401 | 0.86 (0.66-1.11) | ||
| 3+ tablets per day | 2/5 | 1.09 (0.18-6.78) | 82/131 | 0.68 (0.47-0.98) | ||
*
adjusted for age, sex, body mass index (continuous), smoking status (never, former, current), pack years of smoking and long standing diabetes mellitus (> 3 years)