Table 3.
Cumulative incidences and incidence rates (per 1000 person-years) of first recurrent stroke, stratified across 5 year age categories at first-ever stroke | ||||||
---|---|---|---|---|---|---|
Age at first-ever stroke, years | N | n recurrences | Cumulative incidence |
Incidence rate |
||
1-year | 10-year | Total follow-up time, years | Rate per 1000 person-yearsa | |||
<55 | 9 | 1 | 0.0% | 11.1% | 70.9 | 14.1 |
55–60 | 22 | 6 | 0.0% | 18.2% | 176.3 | 34.0 |
60–65 | 67 | 21 | 9.0% | 26.9% | 577.0 | 36.4 |
65–70 | 139 | 32 | 6.5% | 16.5% | 1052.6 | 30.4 |
70–75 | 224 | 62 | 6.7% | 25.0% | 1302.3 | 47.6 |
75–80 | 326 | 85 | 9.2% | 25.5% | 1400.1 | 60.7 |
80–85 | 364 | 64 | 7.4% | 17.0% | 1160.7 | 55.1 |
85–90 | 299 | 39 | 5.7% | 12.7% | 520.1 | 75.0 |
>90 | 251 | 21 | 4.8% | 8.4% | 325.4 | 64.5 |
N, participants at risk for recurrent stroke; n, count of participants with recurrent stroke.
Incidence rate derived by dividing count of recurrences by total follow-up time and multiplying by 1000 person-years.