Table 4.
Bland-Altman agreement analysis (N=136).
|
|
Mean difference (SD)a | LOAsb | Acceptable LOAsc | Pearson rd | P valued |
| Energy (kcal) | −32.0 (386.3) | −789.2 to 725.2 | −849.1 to 785.1 | −0.022 | .80 |
| Carbohydrates (g) | −7.9 (49.4) | −104.8 to 89.0 | −110.1 to 94.3 | −0.048 | .58 |
| Protein (g) | −1.9 (22.0) | −45.0 to 41.3 | −46.7 to 42.9 | 0.017 | .84 |
| Fat (g) | 0.0 (22.9) | −44.8 to 44.9 | −46.2 to 46.2 | −0.047 | .59 |
| Fiber (g) | −2.4 (6.5) | −15.2 to 10.3 | −16.6 to 11.8 | −0.045 | .60 |
| Calcium (mg) | −42.1 (317.4) | −664.2 to 580.0 | −588.4 to 504.2 | −0.214 | .01 |
| Iron (mg) | −1.4 (4.1) | −9.5 to 6.7 | −9.5 to 6.7 | −0.341 | <.001 |
| Sodium (mg) | 560.7 (959.0) | −1315.9 to 2440.4 | −1126.6 to 2248.0 | 0.091 | .29 |
| Potassium (mg) | −97.9 (875.9) | −1814.8 to 1618.9 | −1884.8 to 1689.0 | −0.155 | .07 |
| Folate (µg) | 4.7 (170.8) | −330.0 to 339.5 | −321.2 to 330.6 | −0.233 | .006 |
aAutomated self-administered 24-hour recall (ASA24)—Keenoa.
bLOA: limit of agreement.
cEstablished as the mean intraindividual SD between reported daily intakes multiplied by 1.96.
dRefers to the Pearson correlation between the mean and mean difference between the tools. Significant P values indicate systematic bias.