Table 3.
Incidence and annual event rate of outcomes during follow-up
| |
Incidence, number of patients (%) |
Annual event rate, per 100 patient-years units (95% CI) |
P-value* | ||||
|---|---|---|---|---|---|---|---|
| Total (n = 137) | Asymptomatic (n = 64) | Symptomatic (n = 73) | Total (n = 137) | Asymptomatic (n = 64) | Symptomatic (n = 73) | ||
| All stroke |
15 (10.9) |
9 (14.1) |
6 (8.2) |
4.86 (2.93–8.06) |
6.02 (3.13–11.58) |
3.77 (1.69–8.38) |
0.367 |
| Posterior circulation ischemic stroke |
3 (2.2) |
0 (0) |
3 (4.1) |
0.97 (0.31–3.01) |
0.00 |
1.88 (0.61–5.84) |
0.046 |
| Anterior circulation ischemic stroke |
4 (2.9) |
3 (4.7) |
1 (1.4) |
1.30 (0.49–3.45) |
2.01 (0.65–6.23) |
0.63 (0.09–4.45) |
0.277 |
| Hemorrhagic stroke |
6 (4.4) |
4 (6.3) |
2 (2.7) |
1.94 (0.87–4.33) |
2.68 (1.00–7.13) |
1.26 (0.31–5.02) |
0.367 |
| Unknown stroke |
2 (1.5) |
2 (3.1) |
0 (0) |
0.65 (0.16–2.59) |
1.34 (0.33–5.35) |
0.00 |
0.088 |
| Unstable angina/myocardial infarction |
4 (2.9) |
2 (3.1) |
2 (2.7) |
1.30 (0.49–3.45) |
1.34 (0.33–5.35) |
1.26 (0.31–5.02) |
0.949 |
| Vascular death |
4 (2.9) |
2 (3.1) |
2 (2.7) |
1.30 (0.49–3.45) |
1.34 (0.33–5.35) |
1.26 (0.31–5.02) |
0.949 |
| Composite cardiovascular outcome |
21 (15.3) |
11 (17.2) |
10 (13.7) |
6.80 (4.43–10.43) |
7.36 (4.08–13.30) |
6.28 (3.38–11.66) |
0.714 |
| Non–vascular death | 14 (10.2) | 8 (12.5) | 6 (8.2) | 4.53 (2.69–7.66) | 5.36 (2.68–10.71) | 3.77 (1.69–8.38) | 0.512 |
*p-value was calculated from annual event rates of the asymptomatic and symptomatic groups.