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Table 2 Patients’ demographic data and imaging findings

From: Mapping the ischemic penumbra and predicting stroke progression in acute ischemic stroke: the overlooked role of susceptibility weighted imaging

 NIG groupIG groupp valueSig.
No. = 14No. = 6
Age (years)Median (IQR)64 ( 52–67.75)60 (51–69.5)0.934NS*
Range36–7345–74
GenderFemales4 (28.6%)4 (66.7%)0.111NS**
Males10 (71.4%)2 (33.3%)
Infarct sideRight7 (50.0%)4 (66.7%)0.492NS**
Left7 (50.0%)2 (33.3%)
MismatchSWI aspects > initial DWI aspects (negative mismatch)4 (28.6%)0 (0.0%)  
SWI aspects < initial DWI aspects (positive mismatch)4(28.6%)6 (100%)0.014S**
No SWI–DWI mismatch6 (42.9%)0 (0.0%)  
Initial DWI ASPECTSMedian(IQR)7 (4.75–8)7.5 (6–8)0.356NS*
Range1–96–9
SWI aspectsMedian(IQR)7 (5–8)3.5 (2.5–4.5)0.004HS*
Range4–91–6
FUP ASPECTSMedian(IQR)7 (4.75–8)5.5 (3–6.5)0.261NS*
Range1–93–8
DWI/SWI mismatch scoreMedian (IQR)
Range
0 (− 1.25–2)
− 6–2
3.5 (3–4.5)
3–6
0HS*
Infarct growth scoreMedian (IQR)
Range
0 (0)
0
2 (1.75–3)
1–3
0HS*
Time to MRI (h)Median (IQR)
Range
14 (7.875–20.125)
6–24
12.5 (7.75–20.5)
7–22
0.869NS*
Follow-up time (days)Median (IQR)7 (5–9.25)8.5 (5–14)0.498NS*
Range5–155–14
  1. ASPECTS Alberta Stroke Program Early CT Score, DWI diffusion-weighted imaging, FUP follow-up, HS highly significant, IG infarct growth, IQR- interquartile range, NIG non-infarct growth, NS non-significant, S significant, SWI susceptibility-weighted imaging
  2. *Wilcoxon rank-sum test
  3. **Chi-squared test