Table 3 Calibration parameters and means ± (SD) for energy and nutrients intake estimated from FFQ-1, 24-HRs and calibrated FFQ-1 for boys and girls (n = 111)
Energy/nutrients | α (95 % CI) | β (95 % CI) | FFQ-1 | 24-HRs | Calibrated FFQ-1 |
|---|---|---|---|---|---|
Mean ± SD | Mean ± SD | Mean ± SD | |||
Girls (n = 58) | |||||
 Energy (Kcal) | 644.56 (332.25–956.88) | 0.43 (0.31–0.55)** | 2455.59 ± 809.79 | 1695.71 ± 503.88 | 1695.55 ± 346.59 |
 Protein (g) | 36.38 (20.12–52.65) | 0.28 (0.08–0.49)** | 77.49 ± 23.74 | 58.49 ± 19.06 | 58.47 ± 6.76 |
 Carbohydrate (g) | 107.21 (67.96–146.46) | 0.33 (0.22–0.44)** | 334.74 ± 114.28 | 217.65 ± 60.58 | 217.67 ± 37.71 |
 Fat (g) | 17.70 (1.75–33.64) | 0.53 (0.37–0.68)** | 94.40 ± 37.46 | 67.54 ± 29.58 | 67.73 ± 19.85 |
 Saturated fat (g) | 8.03 (3.31–12.74) | 0.42 (0.26–0.58)** | 28.06 ± 10.77 | 19.80 ± 7.77 | 19.78 ± 4.51 |
 MUFA (g) | 7.14 (1.06–13.22) | 0.48 (0.32–0.65)** | 34.74 ± 14.75 | 23.97 ± 11.40 | 23.81 ± 7.08 |
 PUFA (g) | 1.31 (–3.78–6.40) | 0.72 (0.50–0.93)** | 21.04 ± 10.78 | 16.43 ± 11.64 | 16.43 ± 7.75 |
  Trans-fatty acid (g) | 0.07 (0.03–0.10) | 0.23 (0.08–0.38)* | 0.15 ± 0.17 | 0.10 ± 0.10 | 0.10 ± 0.04 |
 Calcium (mg) | 342.33 (181.53–503.14) | 0.24 (0.08–0.41)* | 921.57 ± 278.95 | 566.81 ± 186.94 | 567.19 ± 68.06 |
 Iron (mg) | 6.93 (3.91–9.95) | 0.32 (0.17–0.48)** | 18.67 ± 6.88 | 13.00 ± 4.50 | 13.00 ± 2.23 |
 Fiber (g) | 8.77 (5.78–11.77) | 0.24 (0.12–0.36)** | 23.07 ± 9.80 | 14.30 ± 4.97 | 14.31 ± 2.35 |
 Sugar (g) | 30.10 (18.94) | 0.27 (0.17–0.36)** | 104.50 ± 46.76 | 57.93 ± 21.12 | 57.90 ± 12.44 |
Boys (n = 53) | |||||
 Energy (Kcal) | 1280.16 (866.98–1693.33) | 0.21 (0.06–0.35)** | 2676.07 ± 828.09 | 1831.75 ± 467.13 | 1831.43 ± 170.58 |
 Protein (g) | 42.25 (26.38–60.13) | 0.23 (0.04–0.42)** | 86.33 ± 27.52 | 63.13 ± 19.31 | 63.11 ± 6.33 |
 Carbohydrate (g) | 180.85 (127.01–234.68) | 0.17 (0.03–0.31)* | 370.61 ± 124.47 | 243.25 ± 64.53 | 247.61 ± 20.66 |
 Fat (g) | 40.32 (24.15–56.49) | 0.29 (0.14–0.45)** | 98.73 ± 33.89 | 69.39 ± 21.19 | 69.42 ± 8.13 |
 Saturated fat (g) | 16.37 (11.69–21.05) | 0.18 (0.05–0.32)** | 32.48 ± 13.84 | 22.33 ± 7.00 | 22.1 ± 2.53 |
 MUFA (g) | 11.13 (4.84–17.42) | 0.38 (0.21–0.55)** | 35.02 ± 11.67 | 24.46 ± 13.84 | 24.44 ± 4.43 |
 PUFA (g) | 11.17 (6.40–15.94) | 0.20 (−0.01–0.41) | 20.54 ± 9.95 | 15.30 ± 7.67 | 15.30 ± 2.00 |
  Trans-fatty acid (g) | 0.07 (0.03–0.11) | 0.12 (−0.01–0.38) | 0.16 ± 0.14 | 0.10 ± 0.11 | 0.10 ± 0.03 |
 Calcium (mg) | 542.27 (352.06–732.47) | 0.14 (−0.02–0.31) | 1079.04 ± 429.39 | 695.36 ± 257.79 | 695.49 ± 60.97 |
 Iron (mg) | 5.45 (2.60–8.29) | 0.43 (0.29–0.56)** | 19.54 ± 7.48 | 13.78 ± 4.83 | 13.77 ± 3.19 |
 Fiber (g) | 11.22 (7.67–14.78) | 0.19 (0.05–0.33)** | 23.68 ± 9.44 | 15.76 ± 5.03 | 15.77 ± 1.81 |
 Sugar (g) | 58.13 (42.08–74.17) | 0.09 (−0.03–0.21) | 123.30 ± 47.70 | 69.04 ± 21.05 | 84.02 ± 10.02 |