Table 5. Evaluation of discriminant validity (Safety Management System)

	SPO	RM	SA	SP	AVE	Conceptual reliability
SPO	1				0.680	0.680
RM	0.448	1			0.840	0.840
SA	0.487	0.376	1		0.702	0.702
SP	0.296	0.227	0.389	1	0.695	0.700