Occurrence of vascular events within 1 to 3 years after acute stroke onset in the Ginkgo biloba extract and control groups (follow-up in April 2015)
| GBE group (n=176) | Control group (n=163) | Difference (P value) | |
| Vascular event (n (%)) | 16 (9.1) | 20 (12.3) | 0.343 |
| Cerebrovascular event (n (%)) | 13 (7.4) | 16 (9.8) | 0.424 |
| Cardiovascular event (n (%)) | 3 (1.7) | 3 (1.8) | 1.000 |
| Other events (n (%)) | 1 (0.6) | 0 (0) | 1.000 |
| Death (n (%)) | 4 (2.3) | 1 (0.6) | 0.415 |
GBE, Ginkgo biloba extract.