Table 4. Estimated and weighed food portions consumed on the same day (Study 2, n = 65).
| Food item | Number of Estimations | Amount consumed (g) | Amount Estimated (g) | Difference (g) | % difference* | P-Value† | |||
|---|---|---|---|---|---|---|---|---|---|
| Mean | SE | Mean | SE | Mean | SE | ||||
| Spicy Rice | 32 | 106.8 | 4.6 | 194.4 | 20.1 | +87.7 | 19.1 | 82.1 | <0.001 |
| Crushed wheat with meat | 44 | 107.0 | 7.2 | 145.8 | 11.9 | +38.8 | 9.6 | 36.2 | <0.001 |
| Rice with meat | 23 | 125.1 | 11.8 | 199.2 | 25.4 | +74.1 | 27.7 | 59.3 | 0.027 |
| Bread with meat stew | 27 | 178.8 | 59.9 | 164.4 | 17.4 | -14.4 | 63.7 | -8.1 | .057 |
| Green salad with bread | 52 | 95.0 | 4.0 | 147.9 | 10.6 | +54.0 | 97 | 55.7 | <0.001 |
| Fruit Salad | 22 | 108.3 | 10.8 | 126.5 | 12.5 | +18.2 | 8.9 | 16.8 | 0.058 |
| Bread pudding | 39 | 101.4 | 9.7 | 104.0 | 10.4 | +2.6 | 117 | 2.5 | 0.976 |
| Wheat pudding | 18 | 45.1 | 2.3 | 65.3 | 10.5 | +20.2 | .9.6 | 44.7 | 0.031 |
| Fried vermicelli | 22 | 63.6 | 7.4 | 103.8 | 14.5 | +40.2 | 12.3 | 63.1 | 0.005 |
| Total number of estimations | 279 | ||||||||
SE = standard error; (+) = overestimation; (-) = underestimation.
* % difference = [(mean amount estimated − mean amount eaten)/mean amount eaten] × 100.
†P<0.05 is considered significant (Wilcoxon’s Signed Rank).