Table 1

 Study design

MonthHospital 1 (3957)Hospital 2 (2140)
Number in brackets indicates number of attendees with mental health problems presenting to A&E in specified period.
1–3Pre-intervention survey (949)Pre-intervention survey
4–6Psychiatric nursing interventionPre-intervention survey
(1075), of which 785 while(522)
psychiatric nurse on duty
7–9Post-intervention survey (963)Psychiatric nursing
intervention (552),
of which 493 while
psychiatric nurse on duty
10–12Post-intervention survey (970)Post-intervention survey