Table 2.

Usability ratings of the Tranquility program.

Usability componenta	Rating, mean (SD; range)	Agreement with this statement, n (%)	Disagreement with this statementb, n (%)
I think that I would like to use the Tranquility program frequently	3.75 (0.71; 3-5)	5 (63)	N/Ac
I thought that the Tranquility program was easy to use	4.29 (0.76; 3-5)	6 (86)d	N/A
I found the various functions in the Tranquility program were well integrated	4.25 (0.46; 4-5)	8 (100)	N/A
I would imagine that most people would learn to use the Tranquility program very quickly	3.88 (0.99; 2-5)	6 (75)	N/A
I felt very confident using the Tranquility program	4.13 (0.35; 4-5)	8 (100)	N/A
I needed to learn a lot of things before I could get going with the Tranquility program e	1.75 (1.04; 1-4)	N/A	7 (86)
I found the Tranquility program unnecessarily complex e	2.13 (0.99; 1-4)	N/A	6 (75)
I think that I would need the support of a technical person to be able to use the Tranquility program e	1.5 (0.53; 1-2)	N/A	8 (100)
I thought there was too much inconsistency in the Tranquility program e	1.75 (0.46; 1-2)	N/A	8 (100)
I found the Tranquility program cumbersome to use e	2.13 (0.83; 1-4)	N/A	7 (86)

^aRatings ranged from strongly disagree (score=1) to strongly agree (score=5).

^bReverse-coded items.

^cN/A: not applicable.

^dThere was missing data for 1 participant (n=7).

^eItems that are reverse-scored (ie, low scores mean higher usability) are italicized.