Interventional and clinical factors that were tested for the effect on clinical outcome after endovascular treatment of patients with tandem lesions (n = 41).

Table 1: Interventional and clinical factors that were tested for the effect on clinical outcome after endovascular treatment of patients with tandem lesions (n = 41).

Clinical factors	Interventional factors
Age, gender	Antegrade/retrograde stenting
Co-morbidities	Procedural time
Degree of extracranial Stenosis	No. of thrombectomy manoeuvres
Site of intracranial vessel occlusion	Successful recanalization (TICI 2b and 3)
IV Lysis yes/no
NIHSS on admission
ASPECT score
Collateral status (according to Tan)
Time from symptom onset to recanalization

IV Lysis: Intravenous administration of rtPA; NIHSS: National Institutes of Health Stroke Scale; ASPECT: Alberta Stroke Program Early CT Score; TICI: Thrombolysis in cerebral infarction Score.