Cardiac arrest patients are less likely to get CPR from a bystander in low-income neighborhoods than in more affluent areas, according to an analysis of more than 14,000 cases published in the New England Journal of Medicine. Patients were half as likely to get CPR from a bystander in low-income, mostly black areas than in more affluent, predominantly white neighborhoods, and the trend held in poor white and Latino areas, too. Those who did receive CPR from a bystander had twice the chance of surviving the event, researchers said.