Portela, Maria Conceição A. Silva2016-06-282016-06-282014PORTELA, Maria - Value and quantity data in economic and technical efficiency measurement. Economics Letters. ISSN 0165-1765. Vol. 124, n.º 1 (2014), p. 108-1120165-1765http://hdl.handle.net/10400.14/20318This paper calls attention to the implications of using value data in efficiency measurement through Data Envelopment Analysis (DEA). The main contributions are twofold: (i) it provides a reconciliation of the previous literature on analysing issues of quantity and value data in efficiency measurement, (ii) it provides some guidelines on what to do, when these issues arise in a data set.engData Envelopment AnalysisTechnical efficiencyCost efficiencyjournal article10.1016/j.econlet.2014.04.023WOS:000338599900025