“…Likewise, we assess the effectiveness of every item of social spending to reduce poverty from the correlation of that expense type with the value of efficiency measures. A wide range of studies have evaluated the efficiency of public interventions, both from the fiscal policy perspective (i.e., taxes and direct monetary transfers; Bárcena-Martín, Blanco-Arana, & Pérez- Moreno, 2018;Marchal, Marx, & Van Mechelen, 2014;Smith & Shone, 2016;Vaalavuo, 2013) and the perspective of nonmonetary social benefits, such as health and education (Alfonso & St. Aubyn, 2005, 2006Clements, 2002;Gupta & Verhoeven, 2001;Kapsoli & Teodoru, 2017). The effectiveness of social policies and the efficiency of SEs to reduce inequality and poverty indexes have also been investigated: Herrmann et al (2008) in the context of EU-27 countries (EU-28 less Croatia); Afonso, Schuknecht, and Tanzi (2010) for OECD countries; and Lefebvre, Coelli, and Pestieau (2010) in EU-15 countries.…”