Table 3.
Regression and cross-classification analysis between values estimated by the digital and by the weighed record methods, respectively, for total energy intake per meal, energy density, and macronutrient distribution (n = 88)
| Weighed record | Digital methoda | |||||||
|---|---|---|---|---|---|---|---|---|
| Nutrients | mean | (SD) | mean | (SD) | P-value | Spearmans correlation coefficient | Classified into same/same or adjacent quartile,% | Regression slope, 95% confidence intervals |
| Energy (Kj)b | 2220 | (744) | 1970 | (691) | <0.001 | 0.89 | 64/98 | 0.83–1.03 |
| Energy density (kJ/100g) | 493 | (131) | 501 | (132) | 0.074 | 0.95 | 78/99 | 0.89–1.02 |
| Fat (E%) | 32.8 | (11.5) | 33.2 | (11.7) | 0.564 | 0.97 | 82/100 | 0.94–1.04 |
| Carbohydrate (E%) | 45.2 | (13.3) | 44.7 | (13.3) | 0.358 | 0.96 | 77/100 | 0.89–1.02 |
| Protein (E%) | 21.7 | (6.8) | 21.7 | (6.5) | 0.961 | 0.95 | 77/100 | 0.84–0.97 |
a
Average of the two image analysts' weight estimations.
b
Correlation and regression analysis on log-transformed data.