Table 2.
Differences in outcomes according to aspirin prescription.
| Variable | Aspirin (N = 909) | Non-aspirin (N = 909) | Total (N = 1,818) | Chi-squared | Risk ratio [95% CI] | p-value |
|---|---|---|---|---|---|---|
| CVD | 318 (35.0) | 248 (27.3) | 566 (31.1) | 12.57 | 1.43 [1.17, 1.75] | < .01 |
| CVD type (% from total CVD events) | 2.91 | .40 | ||||
| Stroke | 119 (37.4) | 104 (42) | 223 (39.4) | |||
| ACS | 159 (50.0) | 112 (45.2) | 271 (47.9) | |||
| PVD | 40 (12.6) | 32 (12.9) | 72 (12.7) | |||
| Bleeding | 84 (9.2) | 83 (9.1) | 167 (9.2) | 0.01 | 1.01 [0.73, 1.39] | .93 |
| Bleeding source | ||||||
| Gastrointestinal | 54 (64.3) | 58 (70.7) | 112 (67.5) | 0.15 | 0.92 [0.63, 1.35] | .77 |
| Hemoptysis | 6 (7.1) | 3 (3.7) | 9 (5.4) | 1.01 | 2.00 [0.50, 8.04] | .51 |
| Intra-cranial | 11 (13.1) | 9 (11.0) | 20 (12.0) | 0.20 | 1.22 [0.56, 2.70] | .65 |
| Hematuria | 12 (14.3) | 11 (13.4) | 23 (13.9) | 0.04 | 1.09 [0.48, 2.48] | .83 |
| Mixed | 0 | 1 (1.2) | 1 (0.6) | 0.87 | 0.59 [0.53, 0.66] | .92 |
| Epistaxis | 1 (1.2) | 0 (0) | 1 (0.6) | – | – | – |
| All-cause mortality | 371 (40.8) | 395 (43.5) | 766 (42.1) | 1.29 | 0.89 [0.74, 1.08] | .25 |
Values are presented as absolute numbers (percentage).
CVD cardiovascular disease; ACS acute coronary syndrome; PVD peripheral vascular disease.