What is the survival rate of ECMO?

Could you please elaborate on the survival rate of ECMO, or Extracorporeal Membrane Oxygenation? I understand it's a complex medical procedure used in critical care situations, but I'm curious about the overall success rate for patients undergoing this treatment. Are there any factors that significantly impact the survival rate, such as the patient's age, underlying health conditions, or the severity of their illness? Additionally, how does the survival rate compare to other similar treatments or interventions?