Table 1.
Repeatability coefficients (95% confidence interval) between measurement methods for percent deviation from weighed measurement.
| Outcome | Assessment method | RC for percent deviation from weighed measurementa |
|---|---|---|
| Total energy (kcal) | Diary | 79.6 (55.5, 103.3) |
| Photo | 43.3 (32.1, 53.9)* | |
| Sensor | 59.9 (45.9, 7.4) | |
| Carbohydrate (g) | Diary | 84.1 (56.8, 109.1) |
| Photo | 42.2 (23.5, 59.0) | |
| Fat (g) | Diary | 96.5 (59.4, 136.4) |
| Photo | 80.6 (48.1, 116.4) | |
| Protein (g) | Diary | 99.3 (64.7, 131.2) |
| Photo | 55.0 (38.3, 70.8) | |
| Fiber (g) | Diary | 96.1 (65.9, 123.1) |
| Photo | 45.2 (28.8, 61.3)* | |
| Calcium (mg) | Diary | 93.2 (62.1, 125.2) |
| Photo | 47.0 (37.8, 55.9)* | |
| Iron (mg) | Diary | 188.6 (61.0, 300.2) |
| Photo | 61.1 (40.8, 79.6) | |
| Sodium (mg) | Diary | 224.9 (78.4, 363.3) |
| Photo | 88.8 (44.2, 134.0) |
a
{[Weighed-Diary (or photo)]/weight} × 100.
*
Statistically significant difference in RCs from diet method at a 5% significant level.