Research Article
Do Public-Private Partnerships Improve the Operational Efficiency of Infrastructure in Mainland China?
| | Variable | National | Eastern | Central | Western |
| | Concession | −0.0217 (0.0668) | 0.0594 (0.0306) | 0.0396 (0.132) | −0.309 (0.165) | | IE | −0.0458 (0.0177) | −0.0244 (0.0147) | −0.00343 (0.0380) | 0.00424 (0.0393) | | PGDP | 3.83e − 06 (1.54e − 06) | 1.18e − 06 (1.02e − 06) | 5.85e − 06 (3.99e − 06) | 7.62e − 06 (3.39e − 06) | | Competition | −9.078 (2.490) | −3.361 (1.134) | 4.845 (6.534) | −30.68 (10.76) | | Scale | 2.181 (1.815) | 0.403 (0.993) | −10.08 (4.129) | 9.166 (3.702) | | Constant | 0.667 (0.0930) | 0.416 (0.0980) | 0.294 (0.172) | 0.538 (0.170) | | sigma_u | 0.151 (0.0286) | 0.0557 (0.0165) | 0.0433 (0.0183) | 0.172 (0.0419) | | sigma_e | 0.0873 (0.00662) | 0.0322 (0.00383) | 0.0713 (0.00907) | 0.125 (0.0155) |
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Note. Standard errors in parentheses, , , and . |
