• The CHARMER trial uses a stepped wedge design.
  • All 24 hospitals will start at the same time (1 December 2023) and begin with baseline patient data collection.
  • Hospitals will be grouped into four ‘steps’, with five hospitals per ‘step’. Hospitals in the earlier steps will implement the intervention earlier than hospitals in later steps.
  • Four additional hospitals will remain in baseline throughout the trial and will only be invited to implement the intervention if a site allocated to steps 1 to 4 is unable to continue to participate. These four baseline hospitals will receive the CHARMER intervention materials at the end of the trial period, but they will not receive project manager funding