Table 5. Bland-Altman limits of agreement and 95% confidence interval (CI) for the average difference between estimated and consumed food portions.
| Food Item | Number of Estimations | Mean | S.D. | S.E. | 95%CI | Limits of agreement | |
|---|---|---|---|---|---|---|---|
| Mean-2SD | Mean+2SD | ||||||
| STUDY 1 | |||||||
| All food items | 265 | 36.92 | 93.07 | 8.1 | 20.90–52.95 | -149.22 | 223.06 |
| Grain | 57 | 9.87 | 54.48 | 4.74 | 0.49–19.25 | -99.09 | 118.83 |
| French Fries | 36 | 2.47 | 31.58 | 2.75 | -2.97–7.91 | -60.69 | 65.63 |
| Meat Curry | 12 | 3.82 | 20.4 | 1.78 | 0.31–7.33 | -36.98 | 44.62 |
| Vegetables | 103 | 13.55 | 48 | 4.18 | 5.28–21.81 | -82.45 | 109.55 |
| Cream Cheese | 17 | 0.64 | 3.33 | 0.29 | 0.06–1.21 | -6.02 | 7.3 |
| Chocolate Cake | 14 | 2.81 | 11.62 | 1.01 | 0.81–4.81 | -20.43 | 26.05 |
| Soup | 26 | 3.77 | 31.09 | 2.71 | -1.58–9.13 | -58.41 | 65.95 |
| STUDY 2 | |||||||
| All food items | 279 | 60.62 | 304.83 | 37.81 | -14.92–136.15 | -549.04 | 670.28 |
| Green salad with bread | 52 | 40.86 | 70.14 | 8.7 | 23.48–58.24 | -99.42 | 181.14 |
| Main Course | 126 | 89.63 | 263.03 | 32.63 | 24.45–154.81 | -436.43 | 615.69 |
| Dessert | 101 | 47.92 | 101.15 | 12.55 | 22.86–72.99 | -154.38 | 250.22 |