| Manual Alerts | PHS Alerts | P value |
---|---|---|---|
Patients, n | 3497 | 3781 | Â |
PT/INR measurements+ | 15,790 | 16,704 | Â |
  PT value > 50, n (%) | 583 (4) | 444 (3) | < 0.01 |
Number of complications, event (person) | 164 (139) | 223 (171) | 0.24* |
  Number of thromboembolic events, event (person) | 56 (50) | 62 (58) | 0.709* |
  Number of hemorrhagic events, event (person) | 108 (96) | 161 (123) | 0.198* |
    Major hemorrhage, event (person) | 94 (86) | 131 (111) |  |
    Treatment with vitamin K, event (person) | 14 (12) | 30 (18) |  |