Cost-avoidance and qualitative analysis of clinical pharmacy interventions by psychiatric pharmacy residents at state psychiatric facilities.

Purpose: The cost avoidance and quality of clinical interventions made by postgraduate year 2 (PGY2) psychiatric pharmacy residents are analyzed.

Methods: A retrospective database review of clinical interventions made by PGY2 psychiatric pharmacy residents in two state psychiatric facilities from July 1, 2007 through June 30, 2014, was conducted using a clinical intervention documentation software system. Cost avoidance was calculated by multiplying the mean cost of an adverse drug reaction (ADR) by the probability of an ADR occurring had the intervention not occurred.