Table 8.

Regression analysis of satisfaction measure against performance metrics. SUS: System Usability Scale.

Group	SUS measures	Time taken	Cues required	Errors made	After Scenario Questionnaire
1 (No extra training)	Overall SUS	0.29	0.47	0.7a	0.634b
	Usability subscale	0.37	0.48	0.8c	0.63b
	Learnability subscale	0.07	0.78c	0.4	0.39
2 (Extra training)	Overall SUS	0.32	0.84c	0.44	0.42
	Usability subscale	0.1	0.7b	0.55a	0.21
	Learnability subscale	0.62b	0.54a	0.305	0.58a

^aP<.10.

^bP<.05.

^cP<.01.