Technical and Energy Efficiency of Urban Logistics in China: Empirical Analysis of 216 Prefecture-Level Cities

Table 3

Test results that determine the choice of the translog production function.

Value	Model 1 (no time lag)	Model 2 (1-year lag)	Model 3 (2-year lag)	Model 4 (3-year lag)
LLPH0	−633.876	−547.589	−489.562	−407.939
Λ	7.993	7.636	31.431	32.523
Critical value	7.045	7.04	7.045	7.045
Test result	Rejected H0	Rejected H0	Rejected H0	Rejected H0