Table 3.
Percentage of over or underestimation of the weight of displayed portions of 20 items using e-CA or a paper-based food record, analyzed by two independent investigators, and compared to real weight.
| Foods and Beverages Displayed | Real Weight | e-CA | Paper-Based Food Record | |
|---|---|---|---|---|
| (g) | (n = 11) | Investigator 1 (n = 11) | Investigator 2 (n = 11) | |
| Breakfast cereal | 80 | −26% | −5% | 19% |
| Bread | 38 | −3% | 4% | −23% |
| Butter | 12 | +2% | 59% | 52% |
| Jam | 31 | −30% | −31% | −36% |
| Coffee | 70 | +130% | 106% | 114% |
| Cereal bar | 19 | −4% | 43% | 40% |
| Chicken + sauce | 200 | −38% | −26% | −31% |
| Rice | 153 | −35% | −4% | −17% |
| Carrots | 165 | −27% | −30% | −27% |
| Wine | 150 | −33% | −22% | −18% |
| Apple | 150 | −22% | −18% | −33% |
| Chocolate | 17 | +6% | 10% | −1% |
| Yogurt | 150 | +2% | −5% | 0 |
| Cookies | 28 | +36% | 17% | 5% |
| Tea | 200 | +25% | −5% | 5% |
| Quiche | 166 | +7% | −5% | −18% |
| Green salad | 30 | +14% | 30% | 50 |
| Pumpkin soup | 200 | +55% | −5% | 18% |
| Grapes | 140 | +1% | −38% | −10% |