Table 10.

Linear correlation between the factors (sample of consumers).

	INF	OPE1	OPE2	PHY1	PHY2	PHY3
OPE1	0.600 **
OPE2	0.451 **	0.550 **
PHY1	0.390 **	0.437 **	0.289 **
PHY2	0.653 **	0.478 **	0.496 **	0.299 **
PHY3	0.594 **	0.571 **	0.445 **	0.313 **	0.494 **
VIS	−0.099 **	−0.001	0.000	0.211 **	−0.117 **	−0.083 **

** Statistically significant correlation at the 0.01 level.