TABLE 3

Recurrent Stroke Rates Among 52 Children With Later Childhood AIS and Vascular Imaging

1-y Cumulative Recurrence Rate, % (95% CI)5-y Cumulative Recurrence Rate, % (95% CI)Pa
Finding on vascular imaging
    Normal (n = 24)0 (—)0 (—)
    Large vessel occlusion (n = 6)b0 (—)0 (—)>.99
    Abnormal vascular Imaging (n = 22)c57 (37–79)60 (43–87)<.0001
        Large vessel stenosis (n = 20)55 (34–78)64 (41–86)<.0001
        Moyamoya syndrome (n = 7)57 (27–90)78 (41–99).003
        Vasculitis (n = 2)100 (—)100 (—).02
        Arterial dissection (n = 1)100 (—)100 (—).01
  • a Log-rank test, compared with normal vascular imaging.

  • b Isolated occlusion, not included in our definition of vascular abnormality.

  • c Subcategories of abnormalities on vascular imaging are not mutually exclusive.