. 2020 Jul 23;22(7):e15732. doi: 10.2196/15732

Table 2.

Mean number and duration of telephone calls received.

Telephone call characteristics	Add-on STS^a (n=50)	Control (n=50)
Proportion of patients who received calls, n (%)^b	44 (88)	5 (10)
Number of calls per patient, mean (SD), range^b	4.63 (3.58), 0-11	0.32 (0.99), 0-5
Average duration of calls (minutes), mean (SD)^b	13.09 (5.25)	6.20 (2.17)
Cumulative duration of calls (minutes), mean (SD), range^b	73.37 (48.95), 5-165	1.95 (6.11), 0-30
Assessed average therapist time (minutes), n^c	132	55

^aSTS: scheduled telephone support.

^bMissing values for 9 patients in each group.

^cIn addition to contact time itself, STS takes approximately 4 more minutes for preparation of the call and additional documentation, resulting in a total of 77 additional minutes for STS intervention vs HUS-iCBT as usual.