Research on Innovation Efficiency of Listed Companies in Development Zone Based on the Three-Stage DEA-Tobit Model: A Case Study of Hubei Province

Table 6

Tobit regression results.

Variable	Model 1 comprehensive technical efficiency
Constant (C)	−1.59055 (1.169232)
	0.1203022 (0.0538922)
X2	0.5807479 (0.2068644)
	−0.3263321 (0.1532586)
X4	0.9765009 (0.7176158)
X5	0.2657279 (0.1184951)
	23.66
LR	24.27

Note. ∗∗∗, ∗∗, and ∗ indicate significance levels of 1%, 5%, and 10%, respectively. Standard deviations are in parentheses.