Table 2.
Mean bias, mean relative bias, and MSE of estimates obtained with each scenario for each dietary component based on the WPM method.
| Dietary Components |
Parameter | True Value |
Mean Bias (Mean Relative Bias %) | MSE | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| C2 | NC2 | C3 | NC3 | C2 | NC2 | C3 | NC3 | |||
| Protein (g) |
Mean | 66.47 | −0.01 (−0.01) | 0.02 (0.03) | −0.04 (−0.06) | 0.03 (0.05) | 3.34 | 2.97 | 3.16 | 2.77 |
| P05 | 38.46 | −6.48 (16.84) | −6.31 (16.40) | −5.29 (13.75) | −4.93 (12.82) | 43.03 | 40.86 | 29.42 | 25.33 | |
| P10 | 43.48 | −6.42 (14.76) | −6.04 (13.88) | −5.36 (12.33) | −4.64 (10.67) | 42.73 | 37.34 | 29.73 | 22.72 | |
| P25 | 51.70 | −3.98 (7.69) | −3.84 (7.42) | −3.11 (6.01) | −2.72 (5.27) | 17.24 | 15.82 | 10.54 | 8.30 | |
| P50 | 63.66 | −1.78 (3.18) | −1.48 (2.78) | −1.53 (2.75) | −0.93 (2.34) | 5.56 | 4.33 | 4.28 | 3.01 | |
| P75 | 79.31 | 1.24 (2.68) | 1.06 (2.68) | 0.98 (2.56) | 0.69 (2.14) | 7.15 | 6.49 | 6.44 | 4.58 | |
| P90 | 91.21 | 10.33 (11.32) | 9.48 (10.39) | 8.46 (9.28) | 7.71 (8.45) | 124.67 | 107.60 | 87.89 | 75.06 | |
| P95 | 103.04 | 13.92 (13.51) | 11.79 (11.44) | 10.69 (10.38) | 9.26 (8.99) | 237.60 | 175.03 | 147.45 | 113.17 | |
| Zinc (mg) |
Mean | 9.90 | −0.01 (−0.07) | 0 (0.04) | −0.01 (−0.14) | 0.01 (0.07) | 0.12 | 0.11 | 0.11 | 0.10 |
| P05 | 5.63 | −1.08 (19.13) | −1.03 (18.30) | −0.91 (16.19) | −0.85 (15.08) | 1.18 | 1.09 | 0.87 | 0.76 | |
| P10 | 6.17 | −0.87 (14.11) | −0.8 (12.89) | −0.72 (11.63) | −0.58 (9.33) | 0.79 | 0.67 | 0.54 | 0.39 | |
| P25 | 7.53 | −0.63 (8.42) | −0.58 (7.71) | −0.50 (6.66) | −0.42 (5.63) | 0.44 | 0.40 | 0.29 | 0.24 | |
| P50 | 9.31 | −0.19 (3.36) | −0.19 (2.87) | −0.12 (3.15) | −0.09 (2.62) | 0.13 | 0.11 | 0.13 | 0.09 | |
| P75 | 11.82 | 0.04 (2.98) | 0.08 (3.06) | 0.02 (2.93) | 0.03 (2.82) | 0.17 | 0.19 | 0.17 | 0.17 | |
| P90 | 14.06 | 1.16 (8.28) | 1.07 (7.61) | 0.98 (6.99) | 0.87 (6.21) | 1.86 | 1.54 | 1.36 | 1.08 | |
| P95 | 16.06 | 1.75 (10.89) | 1.52 (9.48) | 1.28 (8.1) | 1.13 (7.09) | 3.90 | 3.03 | 2.40 | 1.87 | |
| Vitamin C (mg) |
Mean | 65.68 | −0.06 (−0.09) | 0.01 (0.01) | −0.21 (−0.31) | −0.03 (−0.04) | 15.88 | 16.13 | 14.30 | 15.65 |
| P05 | 28.59 | −13.71 (47.96) | −13.71 (47.97) | −11.32 (39.59) | −10.4 (36.37) | 191.38 | 191.45 | 130.65 | 110.08 | |
| P10 | 35.41 | −14.13 (39.91) | −13.44 (37.94) | −11.51 (32.49) | −10.53 (29.75) | 205.34 | 184.91 | 135.68 | 115.61 | |
| P25 | 45.32 | −9.88 (21.81) | −9.52 (21.00) | −7.72 (17.03) | −7.39 (16.31) | 105.04 | 99.41 | 66.08 | 65.57 | |
| P50 | 61.68 | −4.69 (8.59) | −4.75 (8.07) | −3.92 (7.31) | −3.60 (6.81) | 38.72 | 36.95 | 29.25 | 27.16 | |
| P75 | 80.23 | 4.98 (6.95) | 5.01 (6.84) | 3.85 (5.77) | 3.79 (5.98) | 50.78 | 50.25 | 36.61 | 35.68 | |
| P90 | 101.46 | 16.76 (16.52) | 16.64 (16.40) | 13.85 (13.65) | 12.98 (12.80) | 367.07 | 351.90 | 263.58 | 232.32 | |
| P95 | 120.30 | 24.08 (20.02) | 22.81 (18.96) | 17.59 (14.62) | 15.80 (13.14) | 680.31 | 619.95 | 377.94 | 334.97 | |
| Vegetables (g) |
Mean | 221.59 | −0.17 (−0.08) | 0 (0) | −0.07 (−0.03) | 0.13 (0.06) | 45.31 | 38.12 | 36.83 | 28.34 |
| P05 | 92.77 | −44.38 (47.84) | −42.73 (46.07) | −33.69 (36.32) | −32.67 (35.22) | 1990.09 | 1853.40 | 1160.65 | 1096.74 | |
| P10 | 115.60 | −42.02 (36.35) | −41.91 (36.25) | −33.77 (29.21) | −32.45 (28.07) | 1785.84 | 1783.45 | 1165.28 | 1072.67 | |
| P25 | 152.07 | −31.18 (20.50) | −29.18 (19.19) | −25.29 (16.63) | −22.54 (14.82) | 998.71 | 872.37 | 653.75 | 531.96 | |
| P50 | 205.82 | −11.89 (5.78) | −9.93 (5.08) | −8.79 (4.96) | −6.71 (3.66) | 184.77 | 143.52 | 136.72 | 83.84 | |
| P75 | 276.24 | 16.40 (6.23) | 15.40 (5.60) | 12.80 (4.95) | 12.34 (4.47) | 419.00 | 308.78 | 283.12 | 208.32 | |
| P90 | 342.43 | 61.85 (18.06) | 58.61 (17.12) | 49.45 (14.44) | 44.5 (13.00) | 4146.79 | 3697.01 | 2717.41 | 2059.91 | |
| P95 | 394.86 | 88.21 (22.34) | 87.18 (22.08) | 72.94 (18.47) | 67.12 (17.00) | 8194.88 | 8082.75 | 5882.91 | 4812.53 | |
MSE—Mean square error; C2—Two consecutive 24 h recalls; NC2—Two non-consecutive 24 h recalls; C3—Three consecutive 24 h recalls; NC3—Three non-consecutive 24 h recalls.