Table 3.
Subgroup analysis stratified by age.
Variables | Age < 65y | Age ≧ 65 y | ||||||
---|---|---|---|---|---|---|---|---|
Total n | Events | HR (95%CI) | P value | Total n | Events | HR (95%CI) | P value | |
With BA dolichosis | 18 | 1 | 0.712 (0.079–6.408) | 0.762 | 21 | 8 | 7.319 (1.525–35.123) | 0.013 |
Without BA dolichosis | 40 | 4 | Ref | NA | 34 | 2 | Ref | NA |
BA, basilar artery; HR, Hazard ratio; CI, confidence interval; NA, not applicable.