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 5

Mean innovation efficiency before and after adjustment in each year.

Year	Before adjustment			After adjustment
	Comprehensive technical efficiency	Pure technical efficiency	Scale efficiency	Comprehensive technical efficiency	Pure technical efficiency	Scale efficiency
2012	0.612	0.745	0.795	0.654	0.880	0.721
2013	0.563	0.710	0.798	0.578	0.894	0.626
2014	0.449	0.727	0.609	0.604	0.930	0.643
2015	0.439	0.707	0.651	0.548	0.826	0.639
Mean	0.516	0.722	0.713	0.596	0.883	0.657