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Table 4 Results of the meta-regression analysis

From: Frontier-based techniques in measuring hospital efficiency in Iran: a systematic review and meta-regression analysis

  Model 1 Model 2 Model 3 Model 4 Model 5 Model 6 Model 7 Model 8
Ln (Size) −0.088* −0.081 −0.077** −0.083** −0.080* −0.094** −0.097** −0.101***
Ln (Dimension) 0.197*** 0.174*** 0.172** 0.195*** 0.200*** 0.216*** 0.198*** 0.204***
SFA   −0.065       
Pooled   0.060       
Output orientation   0.035       
Heterogeneity in location    −0.033      
Heterogeneity in activity     0.020     
Heterogeneity in ownership status      0.041    
Heterogeneity in type of hospital       0.069* 0.072** 0.069*
Published from 2010 onwards        −0.071** −0.076**
Percentage of teaching hospitals in sample         −0.077
Constant 0.731 *** 0.667 *** 0.754*** 0.705*** 0.691*** 0.669*** 0.750*** 0.779***
N 43 43 43 43 43 43 43 36
R-squared 0.290 0.336 0.298 0.294 0.305 0.354 0.423 0.456
  1. SFA = stochastic frontier analysis.
  2. ***, ** and * shows the 1%, 5% and 10% significance level, respectively; standard errors adjusted for clustered observations.