Relationship between Urban Innovation Capability and Energy Utilization Efficiency: An Empirical Study of 281 Prefecture-Level Cities in China

Table 6

Granger causality test.

Variable	Granger test (null hypothesis)	value	Degree of freedom	Pvalue
	The increase in urban innovation capability is not the reason for the increase in energy utilization efficiency.	14.131	2	0.001
	The increase in energy utilization efficiency is not the reason for the increase in urban innovation capability.	1.167	2	0.558