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Table 3 Time variables and major neurological improvement

From: Collateral status evaluation coupled with time window by dynamic axial computed tomographic angiography with a focus on the middle cerebral artery for mechanical thrombectomy

 

NIHSS score decrease ≥ 50% at 24 h

NIHSS score decrease < 50% at 24 h

P

Collateral status: Poor

 n

10

9

 

 ASPECTS

10 (10–10)

6 (3.5–8)

< 0.001

 OtD hours

1.07 (0.63–3.74)

1.92 (1.18–8.73)

ns

 DtI hours

0.35 (0.26–0.41)

0.43 (0.33–0.51)

ns

 ItP hours

0.83 (0.55–0.99)

1.21 (0.78–2.0)

ns

 PtR hours

0.52 (0.38–0.72)

1.15 (0.74–1.68)

< 0.01

 OtR hours

3.26 (2.50–5.35)

5.48 (4.14–11.25)

< 0.05

Collateral status: Intermediate

 n

21

4

 

 ASPECTS

10 (7–10)

9 (7.5–9.8)

ns

 OtD hours

1.83 (0.86–7.96)

11.58 (9.15–13.52)

< 0.05

 DtI hours

0.38 (0.28–0.54)

0.44 (0.38–0.52)

ns

 ItP hours

0.8 (0.61–1.39)

1.01 (0.72–2.08)

ns

 PtR hours

0.55 (0.46–0.95)

0.96 (0.5–1.36)

ns

 OtR hours

5.12 (2.9–9.53)

13.98 (11.02–17.20)

< 0.05

Collateral status: Good

 n

3

1

 

 ASPECTS

10 (7–10)

9

 

 OtD hours

7.33 (4.12–12.4)

1.88

 

 DtI hours

0.42 (0.33–1.5)

0.32

 

 ItP hours

1.15 (0.75–1.35)

1.26

 

 PtR hours

0.33 (0.25–0.97)

2.25

 

 OtR hours

8.67 (7.93–14.3)

5.72

 

Collateral status: Good or Intermediate

 n

24

5

 

 ASPECTS

10 (7.3–10)

9 (8–9.5)

ns

 OtD hours

3.49 (0.91–9.02)

11.08 (5.19–13.04)

< 0.05

 DtI hours

0.39 (0.28–0.55)

0.38 (0.35–0.51)

ns

 ItP hours

0.81 (0.63–1.38)

1.24 (0.74–1.81)

ns

 PtR hours

0.54 (0.43–0.96)

1.26 (0.55–1.82)

ns

 OtR hours

5.64 (3.26–10.40)

13.97 (7.88–16.13)

< 0.05

  1. All values are represented as median (interquartile range) unless specified otherwise
  2. OtD Onset-to-door time, ItP Imaging-to-puncture time, OtR Onset-to-reperfusion time