From: The international food unit: a new measurement aid that can improve portion size estimation
Condition | Food | Small portion | Medium portion | Large portion | F-test | |||
---|---|---|---|---|---|---|---|---|
 |  | Mdn | IQR | Mdn | IQR | Mdn | IQR | χ2 (2) |
Measuring cup (NÂ =Â 36) | Rice | 33.7 | 49.5 | 38.4 | 57.7 | 42.8 | 71.4 | 3.72 |
Chicken | 80.5a | 90.3 | 116.6a,b | 86.7 | 153.1b | 81.4 | 14.39* | |
French fries | 94.3a | 103.6 | 129.3b | 89.9 | 157.6b | 87.1 | 11.17* | |
IFU™ (N = 31) | Rice | −23.9 | 38.0 | −11.5 | 59.0 | −17.8 | 36.5 | 0.84 |
Chicken | 38.8 | 55.5 | 33.2 | 72.1 | 32.2 | 76.7 | 3.94 | |
French fries | 32.7 | 46.4 | 61.0 | 92.0 | 48.6 | 74.3 | 3.94 | |
Modelling clay (NÂ =Â 31) | Rice | 1.4 | 81.1 | 6.3 | 73.8 | 18.7 | 80.4 | 5.10 |
Chicken | 38.8 | 120.3 | 33.2 | 44.4 | 85.1 | 60.8 | 3.68 | |
French fries | 99.1 | 112.8 | 84.0 | 115.0 | 78.3 | 104.0 | 3.16 | |
No aid (NÂ =Â 30) | Rice | 14.6 | 138.1 | 25.5 | 120.8 | 61.4 | 121.4 | 0.47 |
Chicken | 95.9 | 170.1 | 107.5 | 176.6 | 135.4 | 117.7 | 0.47 | |
French fries | 38.3 | 145.2 | 48.8 | 120.0 | 55.0 | 145.2 | 1.67 |