Table 3 The incidence rate ratio (IRR) of in-hospital cardiac arrest and the crude and the Mantel-Haenszel adjusted Odds ratios (OR) of return of spontaneous circulation (ROSC) and 30-day survival (30 DS) for the confounders age, sex and primary rhythm categorised as shockable or non-shockable. °: 7 patients in the post-EWS groups did not obtain ROSC due to being treated with ECMO in connection to the resuscitation

From: Incidence of in-hospital cardiac arrest at general wards before and after implementation of an early warning score