Fig. 1

Kaplan-Meier analysis of survival free of vascular eventsin co-existing diseases. Kaplan-Meier analysis of survival free of vascular events in the nonco-existing intracranial artery stenosis and extracranial carotid plaque and co-existing intracranial artery stenosis and extracranial carotid plaque with up to 21 months follow-up (a). Kaplan-Meier analysis of survival free of vascular events in the nonco-existing intracranial artery stenosis and extracranial carotid lipid rich necrotic core (LRNC) and co-existing intracranial artery stenosis and extracranial carotid LRNC with up to 21 months follow-up (b). The X-axis represents the time of follow-up in months. The Y-axis represents the proportion of patients who were survival free of vascular events