A study just published in the November 2014 edition of Circulation concludes that survival rates for out of hospital cardiac arrest (OHCA) are improving in locations where this data is reported to a national registry. The study used data from the Cardiac Arrest Registry for Enhanced Survival (CARES) to look at 70,027 patients who experienced OHCA. In 2005-2006 the survival rate was just 5.7%. This rate increased to 7.2% in 2008 and to 8.3% in 2012. A map of jurisdictions reporting their cardiac arrest data to CARES in shown below. It includes several local EMS agencies in California.