An Android-Based Heart Monitoring System for the Elderly and for Patients with Heart Disease

Table 6

Results of the System Usability Scale (SUS) questionnaire.

Question	Mean value	SUS converted value	Std
Q1	3.75	2.75	0.79
Q2	2.2	2.8	0.95
Q3	4.2	3.2	0.7
Q4	1.75	3.25	0.79
Q5	3.35	2.35	0.81
Q6	1.95	3.05	0.89
Q7	4.6	3.6	0.6
Q8	2.3	2.7	0.66
Q9	4.05	3.05	0.83
Q10	1.5	3.5	0.6
Total score		% score
30.25		75.625