Table 3 Reproducibility study of food frequency questionnaire: mean ± (SD), median (IQR), intraclass correlation coefficients and correlation coefficients for energy and nutrients. (N = 42)
|  | FFQ1 Mean ± SD | FFQ2 Mean ± SD | FFQ1 Median (IQR) | FFQ2 Median (IQR) | P value | Relative difference | ICC (95%-CI) | Correlation (95%-CI) |
|---|---|---|---|---|---|---|---|---|
Calories (Cal/d) | 2077 ± 635 | 2072 ± 645 | 1879.5 (1655-2668) | 1851 (1641.5-2535) | 0.88 | 0.24% | 0.926 (0.863-0.960) | 0.877 (0.782-0.932) |
Protein (g/d) | 72.9 ± 23.9 | 75.6 ± 23.3 | 68.2 (53.8-86.5) | 70.5 (56.2-92.8) | 0.30 | −3.60% | 0.906 (0.827-0.950) | 0.848 (0.733-0.915) |
Fat (g/d) | 105.9 ± 35.2 | 104 ± 34.2 | 95.7 (77.48-125) | 95.5 (81-119.5) | 0.32 | 1.80% | 0.908 (0.829-0.950) | 0.768 (0.906-0869) |
CHO (g/d) | 215.2 ± 71.4 | 217.7 ± 72.4 | 204.5 (172-254) | 199 (167.5-254) | 0.77 | −1.15% | 0.862 (0.745-0.926) | 0.784 (0.631-0.878) |
Sugar (g/d) | 62.6 ± 33.4 | 63.1 ± 30.4 | 51.7 (42.2-73.2) | 53.6 (44-72.5) | 0.35 | −0.80% | 0.888 (0.793-0.940) | 0.720 (0.533-0.84) |
Fibers (g/d) | 20 ± 7.4 | 24.7 ± 30.2 | 17.9 (14.7-25.9) | 20.2 (15.3-24.5) | 0.37 | −20.59% | 0.366 (−0.174-0.658) | 0.907 (0.833-0.949) |
SAFA (% TEI) | 12.8 ± 2.5 | 13.4 ± 2.5 | 12.4 (11-14.4) | 13.4 (11.5-15.4) | 0.07 | −4.67% | 0.763 (0.561-0.872) | 0.634 (0.381-0.867) |
MUFA (% TEI) | 20.9 ± 3.7 | 20.2 ± 3.5 | 20.7 (18.2-23.3) | 20.4 (17.3-22.3) | 0.21 | 3.86% | 0.523 (0.117-0.743) | 0.361 (0.068-0.711) |
PUFA (% TEI) | 9.1 ± 1.7 | 8.4 ± 2 | 9 (7.7-10.23) | 8.3 (6.9-9.9) | 0.06 | 7.33% | 0.496 (0.066-0.728) | 0.362 (0.056-0.581) |
ω3 FA (g/d) | 1.1 ± 1 | 1 ± 0.8 | 0.8 (0.53-1.22) | 0.7 (0.5-1.2) | 0.19 | 13.73% | 0.811 (0.649-0.898) | 0.455 (0.176-0.666) |
ω6/ω3 FA ratio | 17.6 ± 6.7 | 17.3 ± 6.6 | 18.8 (13.1-22.3) | 17.4 (12.7-21.3) | 0.77 | 1.90% | 0.645 (0.343-0.809) | 0.468 (0.187-0.758) |
Cholesterol (mg/d) | 287 ± 152 | 274.1 ± 125 | 250.5 (186-351.5) | 239 (189-326) | 0.72 | 4.54% | 0.603 (0.264-0.786) | 0.383 (0.09-0.615) |
VIT A (μg/d) | 1080 ± 1389 | 922 ± 491 | 821.5 (497.5-1064) | 865.5 (531-1096) | 0.87 | 15.71% | 0.402 (−0.107-0.678) | 0.755 (0.586-0.861) |
VIT D (μg/d) | 2.3 ± 2.4 | 2.3 ± 2.2 | 1.3 (0.8-2.6) | 1.3 (0.9-2.2) | 0.45 | 0.30% | 0.825 (0.675-0.905) | 0.625 (0.397-0.78) |
VIT E (mg/d) | 12.7 ± 4.7 | 12 ± 4 | 13 (9-15.9) | 11.3 (8.7-14.9) | 0.13 | 5.55% | 0.776 (0.586-0.880) | 0.654 (0.437-0.799) |
VIT K (μg/d) | 314.6 ± 221.6 | 291 ± 159 | 259.5 (172.3-472.8) | 265.5 (182.5-403.3) | 0.44 | 7.91% | 0.832 (0.689-0.910) | 0.854 (0.73-0.919) |
VIT C (mg/d) | 89.6 ± 52.7 | 83.7 ± 46.7 | 75.9 (47.3-138.5) | 71 (54.3-98.1) | 0.38 | 6.84% | 0.773 (0.581-0.878) | 0.623 (0.394-0.779) |
VIT B1 (mg/d) | 1.1 ± 0.4 | 1.1 ± 0.4 | 1 (0.8-1.4) | 1 (0.8-1.3) | 0.99 | −0.20% | 0.857 (0.735-0.923) | 0.804 (0.662-0.89) |
VIT B2 (mg/d) | 1.8 ± 0.7 | 1.8 ± 0.5 | 1.7 (1.3-2.1) | 1.7 (1.5-2) | 0.60 | 0.48% | 0.725 (0.492-0.852) | 0.634 (0.409-0.786) |
VIT B6 (mg/d) | 1.5 ± 0.6 | 1.5 ± 0.46 | 1.4 (1-1.8) | 1.4 (1.2-1.8) | 0.20 | −3.29% | 0.908 (0.830-0.951) | 0.836 (0.714-0.908) |
VIT B9 (μg/d) | 366.4 ± 150.7 | 362.7 ± 146.2 | 328 (243.3-484.8) | 329.5 (260.3-462) | 0.92 | 1.01% | 0.889 (0.795-0.940) | 0.829 (0.702-0.904) |
VIT B12 (μg/d) | 6 ± 10 | 5.4 ± 3.4 | 4 (3-5.6) | 4 (3.2-6.3) | 0.43 | 10.53% | 0.42 (−0.074-0.687) | 0.621 (0.391-0.778) |
Magnesium (mg/d) | 357.3 ± 131.2 | 358.4 ± 110.1 | 350.5 (246-447.5) | 354 (292.5-397.5) | 0.82 | −0.31% | 0.773 (0.580-0.878) | 0.736 (0.557-0.849) |
Calcium (mg/d) | 858.4 ± 289.6 | 909.6 ± 281.8 | 883.5 (593-1060) | 844 (753-1047.3) | 0.19 | −5.79% | 0.833 (0.692-0.910) | 0.749 (0.577-0.857) |
Iron (mg/d) | 12.8 ± 4.9 | 12.69 ± 5 | 11.9 (8.9-16.8) | 12 (9.6-14.4) | 0.85 | 1.15% | 0.913 (0.840-0.953) | 0.843 (0.725-0.913) |
Zinc (mg/d) | 10.6 ± 3.7 | 11.1 ± 3.6 | 10.1 (8.2-12.8) | 10.4 (8.7-13.6) | 0.29 | −4.74% | 0.850 (0.722-0.919) | 0.808 (0.669-0.92) |
Selenium (μg/d) | 91.5 ± 38.6 | 94.7 ± 33.5 | 85.7 (66-114) | 94.6 (66.2-111) | 0.74 | −3.51% | 0.811 (0.650-0.898) | 0.707 (0.514-0.832) |