Table 5.
Secondary analysis
| Number of events | Person-years | Event rate (per 100 person-years) |
Adjusted for age and sex |
Adjusted for age, sex, and antiplatelet therapy |
|||
|---|---|---|---|---|---|---|---|
| Hazard ratio (95% CI) | p | Hazard ratio (95% CI) | p | ||||
| Ipsilateral stroke and TIA | |||||||
| Embolic signals absent | 25 | 670·9 | 3·73 | 1·0 | 1·0 | ||
| Embolic signals present | 5 | 52·8 | 9·47 | 2·63 (1·01–6·88) | 0·049 | 2·65 (1·01–7·00) | 0·049 |
| Ipsilateral stroke | |||||||
| Embolic signals absent | 6 | 673·8 | 0·89 | 1·0 | 1·0 | ||
| Embolic signals present | 3 | 53·0 | 5·66 | 6·37 (1·59–25·57) | 0·009 | 6·56 (1·60–26·86) | 0·009 |
| Any stroke | |||||||
| Embolic signals absent | 14 | 672·1 | 2·08 | 1·0 | 1·0 | ||
| Embolic signals present | 3 | 53·0 | 5·66 | 2·88 (0·83–10·04) | 0·10 | 3·10 (0·88–10·89) | 0·078 |
| Any stroke or cardiovascular death | |||||||
| Embolic signals absent | 20 | 672·7 | 2·97 | 1·0 | 1·0 | ||
| Embolic signals present | 5 | 53·0 | 9·43 | 3·37 (1·26–8·98) | 0·015 | 3·52 (1·31–9·47) | 0·013 |
TIA=transient ischaemic attack.