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Table 1 Definitions

From: The design of the SAFE or SORRY? study: a cluster randomised trial on the development and testing of an evidence based inpatient safety program for the prevention of adverse events

Adverse event
An adverse event (AE) is defined as an unintended injury that results in prolonged stay, disability at the time of discharge, or death and is caused by health care management rather than by the patient's underlying disease process [1, 3, 9, 11].
Bundle
A bundle is a structured way of improving the processes of care and patient outcomes: a small, straightforward set of practices – generally three to five – that, when performed collectively and reliably, have been proven to improve patient outcomes [17].