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. 2022 Oct 4;24(6):999–1017. doi: 10.1007/s10198-022-01529-8

Table 8.

Comparing DEA VRS model results for the random effect models with instrumental variable ∆B(h, 2008), the generalized estimation equation model and Simar and Wilson model

(1)
RE
(2)
RE(IV)
(3)
GEE (logit)
(4)
Simar a Wilson
B(t) − 0.030*** (0.009) − 0.030*** (0.009) − 0.384** (0.151) − 0.070*** (0.022)
B(h, t) 0.266* (0.136) 0.881*** (0.318) 2.641 (2.195) 0.962*** (0.183)
STZ − 0.026 (0.018) 0.000 (0.021) − 0.342 (0.242) − 0.017 (0.016)
A(h) − 0.027 (0.038) − 0.029 (0.037) − 0.429 (0.533) − 0.059* (0.033)
HHI − 0.068 (0.071) − 0.071 (0.071) − 0.921 (0.940) − 0.116 (0.086)
_cons 0.977*** (0.032) 0.968*** (0.031) 3.251*** (0.322) 1.023*** (0.041)
/sigma 0.100*** (0.006)
Obs 576 576 576 390
R 2
 Within 0.024 0.013
 Between 0.117 0.128
 Overall 0.083 0.083

Standard errors are in parenthesis

***p < 0.01, **p < 0.05, *p < 0.1