Relative risks and 95% confidence intervals of stroke recurrence during 10 years by age in each type or subtype of index stroke
| Index stroke | Age group (years) | p Value for trend | |||
|---|---|---|---|---|---|
| 40 to 59 | 60 to 69 | 70 to 79 | 80 and over | ||
| RR | RR (95% CI) | RR (95% CI) | RR (95% CI) | ||
| *Two age groups (40 to 59 and 60 to 69) were combined, as there were no recurrences after atherothrombotic brain infarction in the 40 to 59 age group. | |||||
| CI, confidence interval; RR, relative risk. | |||||
| All types of stroke | 1.0 | 1.3 (0.5 to 3.0) | 1.6 (0.7 to 3.8) | 2.2 (0.9 to 5.4) | 0.016 |
| Brain infarction | 1.0 | 2.0 (0.6 to 6.5) | 2.5 (0.7 to 8.1) | 3.9 (1.1 to 13.1) | 0.002 |
| Lacunar infarction | 1.0 | 2.2 (0.5 to 9.4) | 2.6 (0.6 to 11.1) | 4.8 (1.0 to 22.2) | 0.022 |
| Atherothrombotic brain infarction | 1.0 * | 1.8 (0.4 to 7.5) | 4.7 (1.2 to 18.6) | 0.001 | |
| Cardioembolic stroke | 1.0 | 0.8 (0.1 to 7.3) | 1.4 (0.2 to 12.3) | 0.4 (0.0 to 4.1) | 0.51 |
| Brain haemorrhage | 1.0 | 0.6 (0.0 to 6.3) | 1.2 (0.2 to 10.3) | 2.1 (0.2 to 24.3) | 0.71 |
| Subarachnoid haemorrhage | 1.0 | 1.0 (0.2 to 6.0) | 0.7 (0.1 to 4.4) | 0.0 | 0.60 |