Eastern Cooperative Oncology Group (ECOG) score

The Eastern Cooperative Oncology Group (ECOG) score (published by Oken et al in 1982 runs from 0 to 5, with 0 denoting perfect health and 5 death:

• 0 - Asymptomatic (Fully active, able to carry on all predisease activities without restriction)
• 1 - Symptomatic but completely ambulatory (Restricted in physically strenuous activity but ambulatory and able to carry out work of a light or sedentary nature. For example, light housework, office work)
• 2 - Symptomatic, <50% in bed during the day (Ambulatory and capable of all self care but unable to carry out any work activities. Up and about more than 50% of waking hours)
• 3 - Symptomatic, >50% in bed, but not bedbound (Capable of only limited self-care, confined to bed or chair 50% or more of waking hours)
• 4 - Bedbound (Completely disabled. Cannot carry on any self-care. Totally confined to bed or chair)
• 5 - Death

Reference:

• 1. Oken, M.M., Creech, R.H., Tormey, D.C., Horton, J., Davis, T.E., McFadden, E.T., Carbone, P.P.: Toxicity And Response Criteria Of The Eastern Cooperative Oncology Group. Am J Clin Oncol 5:649-655, 1982.