Table 7.

Results of necessity analysis for individual variables.

Conditional variable	Consistency	Degree of coverage	Conditional variable	Consistency	Degree of coverage
LNGDP	0.488	0.804	~LNGDP	0.625	0.728
LNPOP	0.629	0.772	~LNPOP	0.476	0.730
LNMARKET	0.600	0.745	~LNMARKET	0.499	0.753
TECH	0.491	0.777	~TECH	0.622	0.746
IND	0.679	0.767	~IND	0.444	0.762
OPEN	0.390	0.758	~OPEN	0.703	0.738
LNSCI	0.568	0.771	~LNSCI	0.549	0.753
ENV	0.885	0.740	~ENV	0.182	0.673

~ is the basic symbol for Boolean algebra operations, indicating that the variable condition is missing.