“…DEA has been used for measuring the efficiency and productivity of police in a number of studies (Thanassoulis 1995;Carrington et al 1997;Nyhan and Martin 1999;Sun 2002;Diez-Ticio and Mancebon 2002;Drake and Simper 2000, 2001, 2003a,b, 2004, 2005aVerma and Gavirneni 2006;Goltz 2008;Gorman and Ruggiero 2008;García-Sánchez 2007, 2009Wu et al 2010, García-Sánchez et al 2011aGarcía-Sánchez et al, 2011, 2013. Most of these studies have the single objective of measuring technical efficiency using an input oriented efficiency measure and are limited by the consideration of a single time period.…”