Table II. —Usability ratings and use of the digital Caspar application.

	N.	M (SD), median (IQR) or %
System usability (0-100)	99	75.7 (14.4)
System usability	99
≥90-100	22	22.2%
≥80-89	29	29.3%
≥70-79	24	24.3%
≥60-69	10	10.1%
<60-0	14	14.1%
Overall assessment of the Caspar application	99
Good or better	80	80.8%
Satisfying or worse	19	19.2%
Frequency of Caspar application use	99
Several times per week or more	80	80.8%
Once per week or less	19	19.2%
Type of electronic device (multiple answers possible)	95
Laptop	18	18.9%
Computer	4	4.2%
Mobile phone	77	81.0%
TV	8	8.4%
Tablet	20	21.0%
Total Caspar application use (number of watched videos)	127	78 (25-122)
Intensity of Caspar application use	127
Low use (0-25 videos)	32	25.2%
Moderate use (>25-122 videos)	64	50.4%
High use (>122 videos)	31	24.4%

IQR: inter quartile range; M: mean; SD: standard deviation.