Swor RA, Chen NW, Song J, et al. - In this retrospective cohort analysis, researchers intended to characterize the hospital length of stay (LOS) as well as timing of Do Not Resuscitate (DNR) orders (as surrogates for withdrawal of life sustaining therapy), to examine their association with survival post-cardiac arrest. They used probabilistically linked cardiac arrest registries (Cardiac Arrest Registry to Enhance Survival (CARES) and Michigan Inpatient Database (MIDB) from 2014 - 2017. Participants were adult (≥ 18 years) patients admitted after Out of Hospital cardiac arrest. Findings revealed a negative connection between LOS ≤ 3 days for post-arrest patients and survival, and both patient features and between-hospital variation were shown to be related to results. Between-hospital variation, compared with patient characteristics, seemed to be more highly-associated with provision of early DNR orders. There is a requirement for further work to evaluate variation in early DNR orders as well as their influence on patient survival.