Table 4.

A two-tail Peason (r) correlation analysis for SI, DI, ASC and IMP

Variables	SI	DI	ASC	IMP
SI	1
DI	.836 (.078)	1
ASC	.956 (.011)*	.960 (.010)**	1
IMP	.914 (.030)*	.808 (.098)	.897 (.039)*	1

p values in (), p < 0.01 level**; p < 0.05 level*