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