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. 2020 Oct 16;3(2):e21138. doi: 10.2196/21138

Table 2.

Patient usage results by procedure type (N=47).

Usage ACDFa (n=26) Lumbar fusion (n=21) Total (N=47)
Patient sign-in count, n (%)



1-4 23 (88) 16 (76) 39 (83)

5-9 2 (8) 3 (14) 5 (11)

10+ 1 (4) 2 (10) 3 (6)
Patient sign-in count, mean (SD) 3.0 (4.7) 3.5 (2.8) 3.2 (3.9)
Patient sign-in count, median (IQR) 2 (1-3) 2 (2-4) 2 (1-4)
Caregiver added, n (%)



No 17 (65) 13 (62) 30 (64)

Yes 9 (35) 8 (38) 17 (36)
Added caregivers that logged in, n (%) 3 (33) 4 (50) 7 (41)
Device, n (%)



iOS 17 (65) 16 (76) 33 (70)

Android 9 (35) 2 (10) 11 (23)

Web or notifications off 0 3 (14) 3 (6)
Viewed questions, n (%)      

0 10 (38) 14 (67) 24 (51)

1-10 3 (12) 2 (10) 5 (11)

11-20 5 (19) 0 5 (11)

21-30 4 (15) 4 (19) 8 (17)

31-40 1 (4) 1 (5) 2 (4)

51-60 2 (8) 0 2 (4)

81-90 1 (4) 0 1 (2)
Viewed questions, mean (SD) 16.0 (20.8) 7.4 (12.5) 12.2 (17.9)
Viewed questions, median (IQR) 12.5 (0.0-22.5) 0.0 (0.0-9.0) 0.0 (0.0-21.5)
Viewed questions, range 0.0-85.0 0.0-36.0 0.0-85.0

aACDF: anterior cervical discectomy and fusion.