Table 2. Analysis results of necessary conditions of NCA method.

antecedent conditions	methods	C-accuracy	ceiling zone	Effect size (d)	Scope	P-value
energy consumption	CR	100%	0	0	0.96	1
	CE	100%	0	0	0.96	1
industrial structure	CR	70%	0.166	0.169	0.98	0.024
	CE	100%	0.146	0.149	0.98	0.009
technological innovation	CR	90.00%	0.137	0.148	0.92	0.009
	CE	100%	0.143	0.155	0.92	0
government support	CR	80.00%	0.221	0.237	0.93	0
	CE	100%	0.144	0.154	0.93	0
economic developmen	CR	83.30%	0.183	0.201	0.91	0.014
	CE	100%	0.185	0.203	0.91	0
demographic factors	CR	90%	0.025	0.027	0.93	0.34
	CE	100%	0.036	0.034	0.93	0.291