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. 2017 Sep;38(9):1758–1764. doi: 10.3174/ajnr.A5331

Table 1:

Baseline characteristics of the full MR CLEAN cohort and subgroups included and not included in this study

MR CLEAN Subgroup Included (n = 199) MR CLEAN Not Included (n = 301) MR CLEAN Full Cohort (n = 500)
Mean age (yr) 65 (range, 31–93) 66 (range, 23–96) 65 (range, 23–96)
Male sex (%) 62 (124/199) 56 (168/301) 58 (292/500)
Median NIHSS score 18 (IQR, 14–22) 17 (IQR, 15–21) 18 (IQR, 14–22)
Median ASPECTS 9 (IQR, 8–10) 9 (IQR, 7–10) 9 (IQR, 8–10)
Diabetes mellitus (%) 11 (21/199) 16 (47/301) 14 (68/500)
Atrial fibrillation (%) 27 (54/199) 27 (81/301) 27 (135/500)
Previous stroke (%) 10 (20/199) 11 (34/301) 11 (54/500)
IAT (%) 39 (78/199) 51 (155/301) 47 (233/500)
Median thrombus length (mm) (n = 186) 15.6 (IQR, 10.3–22.2) (range, 4.8–39.5)
Median thrombus volume (mm3) (n = 186) 70.1 (IQR, 49.3–113.3) (range, 6.1–456.7)
Median distance to thrombus (mm) 6.4 (IQR, 0.0–13.5) (range, 0.0–38.2)
T-occlusion (%) 23 (46/199) 29 (88/301) 27 (134/500)
Median density thrombus NCCT (HU) 49.0 (IQR, 44.5–55.4) (range, 33.1–67.8)
Median relative density thrombus NCCT (%) 134.4 (IQR, 116.8–151.7) (range, 65.8–274.4)
Median density thrombus CTA (HU) 61.4 (IQR, 52.6–72.1) (range, 38.5–134.3)
Median relative density thrombus CTA (%) 29.8 (IQR, 21.4–40.8) (range, 12.2–94.7)
Median thrombus attenuation increase (HU) 11.4 (IQR, 0.1–22.5) (range, −9.9–80.0)
Median thrombus void fraction (%) 6.0 (IQR, 0.08–15.4) (range, −8.9–61.8)