Between 2009 and 2012 , we enrolled 600 stroke or transient ischemic attack survivors from diverse , low-income communities in New York City into a 2-arm randomized clinical trial that compared a 6 week ( 1 session/week ) , peer-led , community-based , stroke prevention self-management group workshop ( N = 301 ) to a wait-list control group ( N = 299 ) .