Table 2.

Electronic activity questionnaire usability results

	DASI	PROMIS
	n (%)	n (%)
Independent completion	192 (94.6)	192 (94.6)
Easy to understand	187 (93.5)	186 (93.0)
Easy to complete	187 (93.5)	188 (94.0)
Which was easier to complete?	139 (68.1)	64 (31.5)
	Mean ± SD	Mean ± SD
Completion time (min:s)	01:55 ± 02:08	02:29 ± 1:42

This table displays the results of the responses to survey questions regarding the usability of the two activity questionnaires employed for patient self-triage of functional capacity, the Duke Activity Status Index (DASI), and the Patient-Reported Outcomes Measurement System (PROMIS)–Short Form 12a–Physical Function. The majority of study participants found these questionnaires easy to understand and easy to complete using a first generation iPad. The average time to complete both surveys was less than 3 min

SD standard deviation