Table 2.
The hazard ratio of ischemic stroke and intracranial hemorrhage (N=2357).
| Method | Group | Outcome | Events | Hazard ratio | P value | 95% CI |
| ITTa analysis | Warfarin | Ischemic stroke (n=656) | 28 | 1 | —b | — |
| ITT analysis | NOACc | Ischemic stroke (n=656) | 13 | 0.41 | 0.01 | 0.21-0.82 |
| ATd analysis | Warfarin | Ischemic stroke (n=656) | 19 | 1 | — | — |
| AT analysis | NOAC | Intracranial hemorrhage (n=656) | 11 | 0.54 | 0.12 | 0.25-1.16 |
| ITT analysis | Warfarin | Ischemic stroke (n=784) | 3 | 1 | — | — |
| ITT analysis | NOAC | Intracranial hemorrhage (n=784) | 4 | 1.42 | 0.68 | 0.26-7.82 |
| AT analysis | Warfarin | Ischemic stroke (n=784) | 1 | 1 | — | — |
| AT analysis | NOAC | Intracranial hemorrhage (n=784) | 4 | 254.16 | 0.15 | 0.16-478097.30 |
aITT: intention-to-treat.
bNot applicable.
cNOAC: novel oral anticoagulants.
dAT: as-treated.