Table 4.
Comparison of perceptions and preferences between adolescents and adults regarding use of the mobile telephone food recorda.
| Perceptions and preferences | Adolescents (n = 78)b | Adults (n = 57) | |||||
| Agree, n (%) |
Neutral, n (%) |
Disagree, n (%) |
Agree, n (%) |
Neutral, n (%) |
Disagree, n (%) |
||
| Perceptions | |||||||
| The software was easy to use | 55 (71%) | 9 (13%) | 6 (9%) | 52 (91%) | 1 (2%) | 4 (7%) | |
| I think it would be easy to remember to take an image before mealsc | 26 (37%) | 22 (31%) | 22 (31%) | 47 (83%) | 5 (9%) | 5 (9%) | |
| I think it would be easy to remember to take an image after mealsc | 29 (41%) | 27 (38%) | 15 (21%) | 42 (74%) | 8 (14%) | 7 (12%) | |
| I think it would be easy to remember to take an image before snacks | 8 (11%) | 16 (23%) | 46 (66%) | 15 (26%) | 12 (21%) | 30 (53%) | |
| I think it would be easy to remember to take an image after snacks | 15 (21%) | 19 (27%) | 37 (52%) | 19 (33%) | 13 (23%) | 25 (44%) | |
| Preferences | |||||||
| I think it would be easy to carry and use a credit card-sized fiducial marker | 55 (77%) | 10 (14%) | 6 (8%) | 52 (91%) | 4 (7%) | 1 (2%) | |
| I think it would be easy to carry and use a USB-sized fiducial markerd | 30 (42%) | 19 (27%) | 22 (31%) | 38 (67%) | 15 (26%) | 4 (7%) | |
| I prefer to stand while taking an imagec | 43 (63%) | 14 (21%) | 11 (16%) | 13 (23%) | 12 (21%) | 32 (56%) | |
| I prefer to sit while taking an imaged | 25 (36%) | 21 (30%) | 23 (33%) | 39 (68%) | 8 (14%) | 10 (18%) | |
a Percentages do not add to 100% due to rounding.
b Missing values due to a malfunction of the eInstruction Classroom Performance System.
c P < .001 using chi-square and comparing adolescents versus adults.
d P = .002 using chi-square and comparing adolescents versus adults.