Predictors of 3-month excellent outcome after IVT
3-month mRS score 0–1 (n=77/247) | ||||||
Bivariate (n=247) | Multivariate (n=247) | |||||
OR | 95% CI | P value | OR | 95% CI | P value | |
Sociodemographics features | ||||||
Age | 0.99 | 0.97 to 1.01 | 0.36 | |||
Sex: male versus female | 0.62 | 0.36 to 1.07 | 0.09 | |||
Comorbidities and risk factors | ||||||
Hypertension: absence versus presence | 1.87 | 1.42 to 2.47 | 0.024 | 2.43 | 1.74 to 3.38 | 0.0074 |
Diabetes: absence versus presence | 1.83 | 0.80 to 4.22 | 0.15 | |||
Current smoking: absence versus presence | 1.86 | 1.30 to 2.66 | 0.083 | 2.76 | 1.79 to 4.26 | 0.019 |
Baseline clinical examination | ||||||
NIHSS score, pts* | 0.90 | 0.84 to 0.96 | 0.0018 | |||
Systolic blood pressure, mm Hg* | 1.00 | 0.99 to 1.01 | 0.91 | |||
Glycaemia, g/L* | 0.39 | 0.17 to 0.92 | 0.031 | |||
Temperature, °C* | 1.23 | 0.74 to 2.05 | 0.43 | |||
OTT | ||||||
Hour* | 0.53 | 0.35 to 0.83 | 0.0048 | 0.47 | 0.23 to 0.78 | 0.0033 |
Imaging features | ||||||
Imaging technique: CT versus MRI | 0.64 | 0.32 to 1.25 | 0.19 | |||
DWI volume, 10 mL†‡ | 0.85 | 0.77 to 0.94 | 0.0016 | 0.78 | 0.68 to 0.89 | 0.0004 |
Infarct territory | 0.0033 | |||||
Superficial MCA | Reference | |||||
Deep MCA | 0.86 | 0.35 to 2.08 | 0.73 | |||
Superficial and deep MCA | 0.34 | 0.14 to 0.81 | 0.015 | |||
Other | 0.41 | 0.07 to 2.23 | 0.30 | |||
Thrombus length‡ | ||||||
HMCAS length, mm* | 0.95 | 0.91 to 1.00 | 0.030 | 0.98 | 0.92 to 1.03 | 0.37 |
SVS length, mm* | 0.96 | 0.93 to 0.99 | 0.017 | 0.87 | 0.80 to 0.94 | 0.0012 |
Occlusion site: M1 versus C1 | 4.66 | 1.61 to 13.52 | 0.0046 | |||
Clot burden score‡ | ||||||
CT, pts* | 1.23 | 1.00 to 1.50 | 0.046 | |||
MRI, pts* | 1.26 | 1.07 to 1.47 | 0.0053 | |||
HMCAS/SVS | ||||||
HMCAS: presence versus absence | 0.87 | 0.25 to 2.99 | 0.83 | 0.80 | 0.22 to 2.99 | 0.74 |
SVS: presence versus absence | 0.84 | 0.40 to 1.77 | 0.65 | 7.89 | 1.65 to 37.78 | 0.0097 |
FVH/DWI mismatch: yes versus no‡ | 2.71 | 1.19 to 6.20 | 0.018 | |||
ASPECT-FVH score, pts*‡ | 1.09 | 0.93 to 1.27 | 0.31 | |||
DWM Fazekas score, pts‡ | ||||||
CT, pts* | 0.68 | <0.01 to >100 | 0.99 | |||
MRI, pts* | 0.79 | 0.56 to 1.10 | 0.16 |
3-month excellent outcome after IVT defined by a 3-month mRS score ≤1.
All ORs are calculated for 3-month mRS score ≤2.
Bold values shows p<0.05.
*ORs express the risk variation for a unit increase of the variable.
†ORs express the risk variation for 10 mL increase in the ischaemic core volume on DWI.
‡Nested effect is adjusted on the nesting characteristics, that is, imaging type, to consider effect differently in CT and in MRI.
ASPECTS-FVH score, Alberta Stroke Programme Early CT score and extent of FLAIR vascular hyperintensities (0–6); C1, distal internal carotid artery; clot burden score (0–10); DWI, diffusion-weighted imaging; DWI volume, ischaemic core volume on DWI; DWM Fazekas score, deep white matter Fazekas score (0–3); FVH/DWI mismatch, FLAIR vascular hyperintensity and DWI infarct hyperintensity mismatch; HMCAS/SVS, hyper-dense MCA sign on CT or susceptibility vessel sign on T2*-MRI; IVT, intravenous thrombolysis; M1, first segment of MCA; MCA, middle cerebral artery; mRS, modified Rankin Scale; NIHSS, National Institutes of Health Stroke scale; OTT, onset-to-treatment time; pts, patients.