Demographic data, medication, and aggregation of control subjects and neurologic patients
| Variable | Healthy Blood Donors | Neurologic Patients |
|---|---|---|
| Age, mean ± SD, y | 41 ± 18 | 65 ± 8 |
| Male, n (%) | 30 (60) | 36 (72) |
| Female, n (%) | 20 (40) | 14 (28) |
| Clopidogrel, n (%) | 0 | 0 |
| ASA + clopidogrel, n (%) | 0 | 50 (100) |
| Mean aggregation, mean ± SD, AU | 86 ± 23 | 34 ± 26 |
| 5th to 95th percentile | 52–137* | 1–84 |
| Total, n | 50 | 50 |
Note:—ASA indicates aspirin; AU, arbitrary aggregation unit.
* The fifth percentile of the aggregation results of the healthy blood donors at 52 AU was selected as a cutoff for nonresponse in patients under clopidogrel medication.