Table 7.
Limit of agreement (LoA) and correlation between mean and mean differences.
| Nutrients (Unit) | Bland-Altman Index | Bland-Altman—Correlation Coefficient | ||||
|---|---|---|---|---|---|---|
| Mean Difference | 95% LoA Lower Limit; Upper Limit | Within 95% LoA | % within LoA | Pearson Correlation (r) | p-Value a | |
| Energy (Kcal) | 283.79 | −130.04; 697.62 | 94/97 | 96.9% | −0.19 | >0.05 |
| Protein (g) | 10.01 | −11.50; 31.50 | 89/97 | 91.8% | 0.06 | >0.05 |
| Carbohydrate (g) | 38.50 | −40.17; 117.17 | 94/97 | 96.9% | −0.40 | <0.05 |
| Fat (g) | 9.35 | −12.72; 31.42 | 93/97 | 95.8% | 0.01 | >0.05 |
| Sodium (mg) | 432.74 | −865.45; 1730.93 | 93/97 | 95.8% | 0.07 | >0.05 |
| Calcium (mg) | 40.63 | −233.46; 314.72 | 91/97 | 93.8% | 0.09 | >0.05 |
| Iron (mg) | 287.39 | −432.32; 917.10 | 93/97 | 95.8% | 0.21 | <0.05 |
| Potassium (mg) | 4.07 | −5.92; 14.07 | 94/97 | 96.9% | 0.16 | >0.05 |
| Phosphate (mg) | 189.64 | −181.97; 561.26 | 92/97 | 94.8% | −0.26 | <0.05 |
ap-value for Pearson’s correlation coefficient. Interpretation criteria: good: p-value > 0.05; poor: p-value ≤ 0.05 [44].