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Table 2 Comparison of variables between high and low Dice groups

From: Spatial accuracy of computed tomography perfusion to estimate the follow-up infarct on diffusion-weighted imaging after successful mechanical thrombectomy

Variables

High Dice group

(n = 36)

Low Dice group

(n = 36)

P value

Median ischemic core volume on baseline CTP, mL (IQR)

34 (17–47)

3 (2–10)

< 0.001

Median infarct volume on follow-up DWI, mL (IQR)

51 (19–78)

9 (5–24)

< 0.001

Moderate or severe leukoaraiosis, n (%)

10 (27.78%)

19 (52.78%)

0.031

Median onset to CTP time, min (IQR)

233.00 (177.50–333.50)

304.00 (214.50–440.00)

0.067

Median CTP to recanalization time, min (IQR)

44.50 (33.50–61.00)

48.00 (41.00–77.50)

0.092

Mean baseline NIHSS, (SD)

16 ± 8

13 ± 6

0.148

Hypertension, n (%)

23 (63.89%)

28 (77.78%)

0.195

Intravenous thrombolysis, n (%)

15 (41.67%)

10 (27.78%)

0.216

Intracranial ICA occlusion, n (%)

15 (41.67%)

10 (27.78%)

0.216

Hemorrhage transformation, n (%)

10 (27.78%)

6 (16.67%)

0.257

Sex, n(%) male

26 (72.22%)

23 (63.89%)

0.448

Median age, y (IQR)

67 (60–75)

69 (63–73)

0.844

Hyperlipidemia, n (%)

1 (2.78%)

2 (5.56%)

> 0.999

Diabetes, n (%)

7 (19.44%)

7 (19.44%)

> 0.999

Smoker, n (%)

10 (27.78%)

10 (27.78%)

> 0.999

Atrial fibrillation, n (%)

11 (30.55%)

11(30.55%)

> 0.999

  1. IQR indicates inter-quartile range; NIHSS, National Institutes of Health Stroke Scale scores; SD, standard deviation; CTP, computed tomography perfusion; ICA, internal carotid artery; DWI, diffusion-weighted imaging
  2. Categorical variables were expressed as absolute numbers (percentages)
  3. Continuous variables were displayed as mean ± SD if normally distributed, or median (IQR) if not normally distributed