Table 2

Comparisons between poor and good collateral groups

Poor collateralsGood collateralsP values
Patients, n (%)86 (15.5)468 (85.5)
Age, mean±SD (years)69.4±11.767.3±12.60.156
Male, n (%)48 (55.8)257 (52.9)0.907
Hypertension, n (%)61 (70.9)270 (57.7)0.023
Diabetes, n (%)28 (32.6)113 (24.1)0.107
Dyslipidaemia, n (%)12 (13.9)80 (17.1)0.531
Smoking, n (%)19 (22.1)163 (34.8)0.024
Atrial fibrillation, n (%)49 (56.9)241 (51.5)0.411
Previous ischaemic stroke, n (%)24 (27.9)76 (16.2)0.014
Baseline NIHSS, median±IQR18±614±9<0.001
Baseline ASPECTS, median±IQR8±39±1<0.001
EVT tool, n (%)0.385
 Stent retriever66 (76.7)350 (74.8)
 Penumbra11 (12.8)83 (17.7)
 Both9 (10.5)35 (7.7)
Reocclusion, n (%)11 (12.8)66 (14.1)0.866
Occlusion site, n (%)
 Tandem occlusion12 (16.3)39 (9.0)0.05
 ICA distal37 (43.0)103 (22.0)<0.001
 MCA M145 (52.3)300 (64.1)0.04
 MCA M210 (10.5)87 (11.1)0.999
ORT, mean±SD (min)272±109303±1140.022
Intracranial haemorrhage, n (%)
 Haemorrhagic infarction type 19 (10.5)52 (11.1)0.999
 Haemorrhagic infarction type 216 (18.6)39 (8.3)0.006
 Parenchymal haematoma type 16 (7.0)20 (4.3)0.27
 Parenchymal haematoma type 220 (23.3)25 (5.3)<0.001
Good outcome at 3 months, n (%)5 (5.8)303 (64.7)<0.001
Mortality, n (%)31 (36.0)20 (4.3)<0.001
  • ASPECTS, Alberta Stroke Program Early CT Score; EVT, endovascular thrombectomy; ICA, internal carotid artery; MCA, middle cerebral artery; NIHSS, National Institutes of Health Stroke Scale; ORT, onset-to-reperfusion time.