Table 2.
Patterns of current smartphone usage and predicted future usage.
| Usage | All | Attending | Trainee | P value | |
| Frequency of use, median | Several times a day | Several times a day | Several times a day | .03 | |
|
|
Once a week or less, n/N (%) | 18/199 (9.0) | 13/87 (14.9) | 5/112 (4.5) | |
|
|
2-3 times a week, n/N (%) | 19/199 (9.5) | 11/87 (12.6) | 8/112 (7.1) | |
|
|
Once or twice a day, n/N (%) | 26/199 (13.1) | 11/87 (12.6) | 15/112 (13.4) | |
|
|
Several times a day, n/N (%) | 136/199 (68.3) | 52/87 (59.8) | 84/112 (75.0) | |
| Duration of use (min), median | 11-30 min | 11-30 min | 31-50 min | .02 | |
|
|
<10, n/N (%)a | 34/199 (17.1) | 22/87 (25.3) | 12/112 (10.7) |
|
|
|
11-30, n/N (%) | 69/199 (34.7) | 32/87 (36.8) | 37/112 (33.0) | |
|
|
31-50, n/N (%) | 29/199 (14.6) | 11/87 (12.6) | 18/112 (16.1) | |
|
|
>50, n/N (%) | 67/199 (33.7) | 22/87 (25.3) | 45/112 (40.2) | |
| Number of apps, median | <5 | <5 | <5 | .03 | |
|
|
<5, n/N (%)a | 121/198 (61.1) | 62/86 (72.1) | 59/112 (52.7) |
|
|
|
6-10, n/N (%)a | 50/198 (25.3) | 13/86 (15.1) | 37/112 (33.0) |
|
|
|
11-15, n/N (%) | 15/198 (7.6) | 6/86 (7.0) | 9/112 (8.0) | |
|
|
>15, n/N (%) | 12/198 (6.1) | 5/86 (5.8) | 7/112 (6.3) | |
| Ever used for examination (yes), n/N (%) | 155/191 (81.2) | 58/83 (69.9) | 97/108 (89.8) | <.001 | |
| Frequency of use for examination, median | 2-3 times a month | 2-3 times a month | 2-3 times a month | .03 | |
|
|
Less than once a month, n/N (%) | 40/154 (26.0) | 18/58 (31.0) | 22/96 (22.9) | |
|
|
Once a month, n/N (%) | 19/154 (12.3) | 8/58 (13.8) | 11/96 (11.5) | |
|
|
2-3 times a month, n/N (%) | 32/154 (20.8) | 13/58 (22.4) | 19/96 (19.8) | |
|
|
Once a week, n/N (%) | 20/154 (13.0) | 11/58 (19.0) | 9/96 (9.4) | |
|
|
2-3 times a week, n/N (%) | 27/154 (17.5) | 7/58 (12.1) | 20/96 (20.8) | |
|
|
Daily, n/N (%) | 16/154 (10.4) | 1/58 (1.7) | 15/96 (15.6) | |
| Usefulness, median | Very useful | Very useful | Very useful | .12 | |
|
|
Not useful at all, n/N (%) | 12/191 (6.3) | 8/83 (9.6) | 4/108 (3.7) | |
|
|
Minimally useful, n/N (%) | 48/191 (25.1) | 25/83 (30.1) | 23/108 (21.3) | |
|
|
Very useful, n/N (%) | 85/191 (44.5) | 34/83 (41.0) | 51/108 (47.2) | |
|
|
Essential, n/N (%) | 46/191 (24.1) | 16/83 (19.3) | 30/108 (27.8) | |
| Ever received instruction (yes), n/N (%) | 12/184 (6.5) | 2/82 (2.4) | 10/102 (9.8) | .09 | |
| Likelihood of future use, median | Very likely | Likely | Very likely | .005 | |
|
|
Very unlikely, n/N (%) | 2/184 (1.1) | 2/82 (2.4) | 0/102 (0.0) |
|
|
|
Unlikely, n/N (%) | 1/184 (0.5) | 1/82 (1.2) | 0/102 (0.0) | |
|
|
Somewhat unlikely, n/N (%) | 3/184 (1.6) | 3/82 (3.7) | 0/102 (0.0) | |
|
|
Undecided, n/N (%) | 9/184 (4.9) | 7/82 (8.5) | 2/102 (2.0) | |
|
|
Somewhat likely, n/N (%) | 14/184 (7.6) | 8/82 (9.8) | 6/102 (5.9) | |
|
|
Likely, n/N (%) | 42/184 (22.8) | 21/82 (25.6) | 21/102 (20.6) | |
|
|
Very likely, n/N (%) | 113/184 (61.4) | 40/82 (48.8) | 73/102 (71.6) | |
| Likelihood of future use for examination, median | Likely | Somewhat likely | Likely | .05 | |
|
|
Very unlikely, n/N (%) | 8/184 (4.3) | 6/82 (7.3) | 2/102 (2.0) |
|
|
|
Unlikely, n/N (%) | 6/184 (3.3) | 4/82 (4.9) | 2/102 (2.0) | |
|
|
Somewhat unlikely, n/N (%) | 9/184 (4.9) | 7/82 (8.5) | 2/102 (2.0) | |
|
|
Undecided, n/N (%) | 25/184 (13.6) | 14/82 (17.1) | 11/102 (10.8) | |
|
|
Somewhat likely, n/N (%) | 27/184 (14.7) | 11/82 (13.4) | 16/102 (15.7) | |
|
|
Likely, n/N (%) | 44/184 (23.9) | 17/82 (20.7) | 27/102 (26.5) | |
|
|
Very likely, n/N (%) | 65/184 (35.3) | 23/82 (28.0) | 42/102 (41.2) | |
| Frequency of future use, median | More | More | Same or more | .37 | |
|
|
Never, n/N (%) | 2/184 (1.1) | 1/82 (1.2) | 1/102 (1.0) |
|
|
|
Less than current usage, n/N (%) | 1/184 (0.5) | 0/82 (0.0) | 1/102 (1.0) | |
|
|
The same as current usage, n/N (%) | 80/184 (43.5) | 31/82 (37.8) | 49/102 (48.0) | |
|
|
More than current usage, n/N (%) | 101/184 (54.9) | 50/82 (61.0) | 51/102 (50.0) | |
aIndividual response category was found to be significant upon post hoc testing with Bonferroni correction.