Table 5.
Overall difference, and over- and underestimations of total daily energy intake estimated with SNAQ and 24HR in relation to DLW.
| Variable | n | Δ DLW, N = 30a | MPD DLW, N = 30a | |
|---|---|---|---|---|
| Overall difference | Energy intakeb SNAQ | |||
| Energy (kcal/day)Energy (kJ/day) | 30 | −330.0 (559.0)−1,380.7 (2,338.9) | −12.8% (25.3) | |
| Energy intake 24HR | ||||
| Energy (kcal/day)Energy (kJ/day) | 30 | −543.0 (664.6)−2,271.9 (2,780.7) | −22.9% (29.5) | |
| Overestimations | Energy intake SNAQ | |||
| Energy (kcal/day)Energy (kJ/day) | 4 | 391.5 (171.0)1,638.0 (715.5) | 19.8% (10.2) | |
| Energy intake 24HR | ||||
| Energy (kcal/day)Energy (kJ/day) | 10 | 664.4 (212.0)2,779.8 (887.0) | 34.7% (18.0) | |
| Underestimations | Energy intake SNAQ | |||
| Energy (kcal/day)Energy (kJ/day) | 26 | −591.9 (464.4)−2,476 (1,943.0) | −24.5% (17.4) | |
| Energy intake 24HR | ||||
| Energy (kcal/day)Energy (kJ/day) | 20 | −728.8 (487.7)−3,049.3 (2,040.5) | −31.8% (18.9) | |
24HR, 24-hour dietary recall; DLW, doubly labelled water; MPD DLW, mean percentage difference from DLW values; n, number of cases; Δ DLW, difference from DLW values.
a
Mean (SD). SD, standard deviation.
b
Total daily energy intake.