Table 2.
Assessment of the 1-day food record with digital images, by group.
| Factor | High-Level interventiona (n=21) | Low-Level interventionb (n=21) | |||
| Count | Mean (SD) | Count | Mean (SD) | ||
| Total number of: |
|
|
|
|
|
|
|
Meals eaten | 75 | 3.6 (1.3) | 73 | 3.5 (1.1) |
|
|
Images with FMc | 80 | 3.8 (1.3) | 84 | 4.0 (1.7) |
|
|
Images with correctly placed FM | 45 | 2.1 (2.4) | 83 | 4.0 (1.7) |
|
|
Images accompanied by text reportd | 95 | 4.5 (2.3) | 85 | 4.1 (1.7) |
|
|
Text reportse with missing information | 30 | 1.4 (1.1) | 5 | 0.2 (0.6) |
| Number of participants with: |
|
|
|
|
|
|
|
Completed FRDIf | 15 | N/Ag | 20 | N/A |
|
|
“End” message | 7 | N/A | 8 | N/A |
|
|
FM in all images | 15 | N/A | 20 | N/A |
|
|
Correctly placed FM in images | 9 | N/A | 20 | N/A |
aHigh-level intervention involved one-on-one, face-to-face training and real-time support during food recording day.
bLow-level intervention involved one-on-one training via telephone with only a follow-up after the food recording day.
cFM: fiducial marker.
dImage—showing or not showing fiducial marker—accompanied by the food report text.
eText information should include meal name—breakfast, snack, lunch, or dinner/supper— meal time, and foods and corresponding amounts eaten.
fFRDI: food record with digital images. Completed FRDI refers to reporting all meals eaten and reporting not eating a main meal during food recording.
gN/A: not applicable.