International Scholarly Research Notices

Research Article

Analysis of the Technical Efficiency of Urban Bus Services in Spain Based on SBM Models

Table 7

Summary of regression results of the inputs slacks versus the exogenous variables.
Alternative 1
Input slacksExogenous variables signs in the regression 𝑅 2 coefficient
MCPMAPMCSMASLFRPRGDPMACARMMAARM
Routes length−−++0,30
Number of vehicles−++0,46
Company costs−++−0,56
Alternative 2
Input slacksExogenous variables signs in the regression 𝑅 2 coefficient
MCPDMAPDPRSRPRIVMACARMMAARM
Routes length−++−+0,15
Number of vehicles−++−0,70
Company costs−+−−0,57
See Table 4 for the definition of variables.