• Brian McKenna, Trentham Furness, Steve Brown, Mark Tacey, Andrew Hiam, and Morgan Wise.
• School of Nursing, Midwifery and Paramedicine, Australian Catholic University, 115 Victoria Parade, 3065, Fitzroy, Australia. brian.mckenna@mh.org.au.
• BMC Emerg Med. 2015 Jul 10; 15: 14.

BackgroundThe Northern Police and Clinician Emergency Response (NPACER), a combined police and clinician second response team, was created to divert people in mental health crisis away from the hospital emergency department (ED) to care in the community or direct admission to acute inpatient services. The aim of this study was to evaluate the NPACER by comparing trends in service utilisation prior to and following its inception.MethodsA retrospective comparison of electronic records was undertaken with interrupted time series analysis to assess the impact of NPACER on ED presentations over 27-months (N = 1776). Chi-squared tests were used to analyze service utilization; (1) in the six-months before and after the implementation of NPACER and (2) within the post NPACER period between times of the day it was operational.ResultsNPACER reduced the number of mental health crisis presentations to the ED. When the NPACER team was operational, 16% of people in crisis went to ED compared with 100% for all other times of the day, over a six-month period. The NPACER team enabled direct access to the inpatient unit for 51 people assessed at a police station and in the community compared with no direct access when NPACER was not operational.ConclusionsNPACER enabled reductions in presentations to the ED by diverting people to more appropriate and less restrictive environments. The model also facilitated direct admission to acute inpatient mental health services when people in crisis were assessed in the community or transported to a police station for assessment.

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