Table 4.
Mean difference with 95% limits of agreement between weighed food records and image-based dietary assessment methods in assessing energy and macronutrients intake on weekdays compared with weekend days in free-living adults in Glasgow, UK, between January and August 2016
| Method/nutrient | Weekdays (n = 80) |
Weekend days (n = 80) |
P valuea | ||
|---|---|---|---|---|---|
| Mean difference | Limits of agreement | Mean difference | Limits of agreement | ||
| FPb | |||||
| Energy, kcal | –179 | –962.4, 604.4 | –235.2 | –1,308.1, 837.7 | 0.438 |
| Carbohydrates, g | –3.6 | –298.9, 291.6 | –20.5 | –140.6, 99.5 | 0.348 |
| Protein, g | –2.9 | –45.4, 39.6 | –11.0 | –78.2, 56.3 | 0.077 |
| Fat, g | –9.5 | –56.3, 37.3 | –12.5 | –81.2, 56.3 | 0.497 |
| VRc | |||||
| Energy, kcal | –56.5 | –769.1, 656.2 | –95.2 | –1,092.0, 901.6 | 0.562 |
| Carbohydrates, g | –6.6 | –103.7, 90.4 | –12.4 | –122.4, 97.7 | 0.425 |
| Protein, g | –0.9 | –35.6, 33.8 | –3.8 | –61.4, 53.7 | 0.441 |
| Fat, g | –1.6 | –38.3, 35.1 | –4.6 | –62.6, 53.5 | 0.442 |
a
P values were calculated by paired t test.
b
FP = food photography.
c
VR = video recording.