Table 2.

Correlation analysis table of each index.

Pearson correlation	Pearson-cor/Sig.	Imm	Tum	Mic	Heart	Nut	Aer
Imm	Pearson-cor	1	0.30*	0.04	0.17	0.21	-0.07
	Sig.		0.03	0.79	0.25	0.14	0.64
Tum	Pearson-cor	0.30*	1	0.09	-0.38**	0.10	0.03
	Sig.	0.03		0.54	0.01	0.48	0.86
Mic	Pearson-cor	0.04	0.09	1	0.21	-0.20	-0.003
	Sig.	0.79	0.54		0.14	0.18	0.99
Heart	Pearson-cor	0.17	-.038**	0.21	1	-0.15	-0.02
	Sig.	0.25	0.01	0.14		0.32	0.92
Nut	Pearson-cor	0.21	0.10	-0.20	-0.15	1	-0.19
	Sig.	0.14	0.48	0.18	0.32		0.19
Aer	Pearson-cor	-0.07	0.03	-0.003	-0.02	-0.19	1
	Sig.	0.64	0.86	0.99	0.92	0.19

*At the 0.05 level (Sig.), the correlation is significant, **At the 0.01 level (Sig.), the correlation is significant.