Research on Industry Difference and Convergence of Green Innovation Efficiency of Manufacturing Industry in China Based on Super-SBM and Convergence Models

Table 5

Absolute β convergence regression results of green innovation efficiency of manufacturing industry and industry groups in China.

Coefficients	National manufacturing industry	Low-end technology industry group	Mid-end technology industry group	High-end technology industry group
β	−0.4872 (−8.25)	−0.6288 (−6.73)	−0.4290 (−3.21)	−0.3727 (−4.43)
α	−0.2766 (−6.34)	−0.3715 (−5.77)	−.4238 (−2.47)	−0.0936 (−2.35)
Time effect	YES	YES	YES	YES
Individual effect	YES	YES	YES	YES
Sample numbers	261	117	54	90
R-squared	0.2275	0.3057	0.1795	0.1987
F-value	68.04	45.35	10.28	19.59

Note. β is the coefficient of observation. , , and mean significant at the level of 1%, 5% and 10% respectively. Figures in parentheses are T values. α is the constant term.