Table 1

 Relative risks and 95% confidence intervals of stroke recurrence during 10 years by age in each type or subtype of index stroke

Index strokeAge group (years)p Value for trend
40 to 5960 to 6970 to 7980 and over
RRRR (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 stroke1.01.3 (0.5 to 3.0)1.6 (0.7 to 3.8)2.2 (0.9 to 5.4)0.016
    Brain infarction1.02.0 (0.6 to 6.5)2.5 (0.7 to 8.1)3.9 (1.1 to 13.1)0.002
        Lacunar infarction1.02.2 (0.5 to 9.4)2.6 (0.6 to 11.1)4.8 (1.0 to 22.2)0.022
        Atherothrombotic brain infarction1.0 *1.8 (0.4 to 7.5)4.7 (1.2 to 18.6)0.001
        Cardioembolic stroke1.00.8 (0.1 to 7.3)1.4 (0.2 to 12.3)0.4 (0.0 to 4.1)0.51
    Brain haemorrhage1.00.6 (0.0 to 6.3)1.2 (0.2 to 10.3)2.1 (0.2 to 24.3)0.71
    Subarachnoid haemorrhage1.01.0 (0.2 to 6.0)0.7 (0.1 to 4.4)0.00.60