Number of patients (%) | |||
---|---|---|---|
Aged <75 years | Aged ≥75 years | Total | |
Number at outset | 260 | 341 | 601 |
Stroke or TIA prior to April 1998 | 52 (20.00) | 81 (23.75) | 133 (22.13) |
Treatment at outset | |||
Patients without prior stroke or TIA | |||
Warfarin | 99 (47.59) | 65 (25.00) | 164 (35.04) |
Aspirin | 57 (27.40) | 90 (34.62) | 147 (31.41) |
No antithrombotic therapy | 52 (25.00) | 105 (40.3) | 157 (33.55) |
Patients with prior stroke or TIA | |||
Warfarin | 31 (59.62) | 34 (41.98) | 65 (48.87) |
Aspirin | 17 (32.69) | 33 (40.74) | 50 (37.59) |
No antithrombotic therapy | 4 (7.69) | 14 (17.28) | 18 (13.53) |
Patient years of follow up | |||
Warfarin | 539 (53.85) | 414 (36.60) | 953 (44.70) |
Aspirin | 294 (29.37) | 427 (37.75) | 721 (33.82) |
No antithrombotic therapya | 168 (16.78) | 290 (25.64) | 458 (21.48) |
Total | 1001 | 1131 | 2132 |
Events (% per patient year) | |||
Strokes | 15 (1.50) | 35 (2.83) | 50 (2.20) |
Bleeding complications | 60 (5.99) | 81 (7.16) | 141 (6.61) |
Deaths | 72 (7.19) | 191 (16.89) | 263 (12.34) |
↵a For patients on no antithrombotic therapy, 216 patient years were for patients never prescribed treatment, and 241 for patients whose treatment had been stopped.
TIA = transient ischaemic attack.