Comparison of antiplatelet categories by head CT result for intracranial hemorrhage (ICH)
| No ICH | Acute ICH | Delayed ICH | |
| Aspirin vs P2Y12 | 52% vs 68% −17%* (95% CI −31 to −2) P=0.028 OR 0.50 (95% CI 0.26 to 0.93) | 48% vs 30% 18% (95% CI 4 to 33) P=0.016 OR 2.18 (95% CI 1.15 to 4.13) | 0% vs 1.6% −1.6% (95% CI −4.7 to 1.5) P=0.153 |
| Aspirin vs aspirin+P2Y12 | 52% vs 60% −9%* (95% CI −21 to 3) P=0.153 OR 0.70 (95% CI 0.43 to 1.14) | 48% vs 38% 10% (95% CI −2 to 22) P=0.094 OR 1.52 (95% CI 0.93 to 2.48) | 0% vs 1.5% −1.5% (95% CI −3.5 to 0.6) P=0.168 |
| P2Y12 vs aspirin+P2Y12 | 68% vs 60% 8% (95% CI −6 to 22) P=0.280 OR 1.42 (95% CI 0.75 to 2.66) | 30% vs 38% −8% (95% CI −22 to 6) P=0.269 OR 0.70 (95% CI 0.37 to 1.32) | 1.6% vs 1.5% 0.1% (95% CI −3.5 to 3.8) P=0.950 OR 1.08 (95% CI 0.10 to 12.14) |
*Correct due to rounding.