Treating acute stroke with drugs that minimize cell death could result in a median decrease in disability of 30%. Treatment with stem cell transplants could result in a median decrease in disability of 25%.
Shekelle P, Ortiz E, Newberry S, Rich M, et al. Identifying Potential Health Care Innovations for the Elderly of the Future: Health and costs of the future elderly. Health Aff. 2005; 24(2). https://www.ncbi.nlm.nih.gov/pubmed/16186152