Statistical Analysis Plan: The Effect of Automated External Defibrillators for Cardiac Arrests in Private Homes An Observational Study

This document describes the statistical analysis plan for the study “The Effect of Automated External Defibrillators for Cardiac Arrests in Private Homes”. This will be an observational study using prospectively collected data from the CARES registry in the United States. We will include patients with an out-of-hospital cardiac arrest in a private home. The exposure will be application of an AED and the primary outcome will be survival to hospital discharge. Assuming that there is no causal effect of AED application in those with a non-shockable rhythm, we will use a “difference-in-difference” approach to estimate the causal effect of AED application in those with a shockable rhythm. ### Competing Interest Statement The authors have declared no competing interest. ### Funding Statement This study did not receive any funding. ### Author Declarations I confirm all relevant ethical guidelines have been followed, and any necessary IRB and/or ethics committee approvals have been obtained. Yes The details of the IRB/oversight body that provided approval or exemption for the research described are given below: The Institutional Review Board at Emory University have determined that the CARES registry does not require Institutional Review Board approval as it is a public health surveillance registry and quality improvement program. I confirm that all necessary patient/participant consent has been obtained and the appropriate institutional forms have been archived, and that any patient/participant/sample identifiers included were not known to anyone (e.g., hospital staff, patients or participants themselves) outside the research group so cannot be used to identify individuals. Yes I understand that all clinical trials and any other prospective interventional studies must be registered with an ICMJE-approved registry, such as ClinicalTrials.gov. I confirm that any such study reported in the manuscript has been registered and the trial registration ID is provided (note: if posting a prospective study registered retrospectively, please provide a statement in the trial ID field explaining why the study was not registered in advance). Yes I have followed all appropriate research reporting guidelines, such as any relevant EQUATOR Network research reporting checklist(s) and other pertinent material, if applicable. Yes NA