Calculating Efficiency with Financial Accounting Data : Data Envelopment Analysis for Accounting Researchers

Recent years have seen a preponderance of accounting research using data envelopment analysis (DEA) to measure efficiency. In this study, I examine the calculation of efficiency using DEA, with a focus on large panel datasets of financial accounting data. Using simulation and archival data, I examine three methodological considerations that arise when calculating efficiency with panel data: calculation group size, the choice of calculation group classification, and using subsets of efficiency scores calculated from larger datasets. I find that each of these issues potentially influences the efficiency scores generated by DEA. Based on these methodological issues, I provide evidence and prescriptions to aid researchers using DEA