Table 1

Key characteristics of the three sites included in this study and annual emergency department attendance (attendance data drawn from the North East London Commissioning Support Unit32)

SiteAverage number of open general and acute inpatient beds during study periodNumber of critical care bedsNumber of adult beds, emergency departmentNumber of adult beds and chairs, clinical decision unitConsultant staffing levelEmergency department attendances in the year 2012–2013
Site 174761381424 hours, on-site92 137
Site 2589937128:00 to midnight, 7 days a week70 144
Site 3452723258:00–20:30 weekdays
10:00–18:00 weekends
55 866