Table 5.
Mean daily nutrient intakes and Pearson correlation coefficients from the average of two FFQs and two 24hDRs among children aged 15–17 years of the INMA-Granada study (n = 51).
| Nutrients Intake (units/day) | FFQav 1 | 24hDRav 2 | p-value 3 | Pearson Coefficient | % of Agreement 7 | ||
|---|---|---|---|---|---|---|---|
| Mean (SD) | Mean (SD) | r 4 | r adj. 5 | r de-att. 6 | |||
| Energy (kcals/day) | 2909 (1428) | 2484 (466) | 0.044 | 0.24 | 62.7 | ||
| Protein (g/day) | 133 (67) | 106 (26) | 0.009 | 0.18 | 0.40 | 0.40 | 68.6 |
| Total carbohydrates (g/day) | 322 (139) | 270 (71) | 0.020 | 0.25 | 0.07 | 0.07 | 58.8 |
| Dietary fiber (g/day) | 27 (12) | 19 (6) | <0.001 | 0.36 | 0.38 | 0.53 | 62.7 |
| Total fat (g/day) | 125 (74) | 111 (27) | 0.217 | 0.15 | 0.17 | 0.24 | 58.8 |
| SFA (g/day) | 40 (26) | 35 (10) | 0.144 | 0.23 | 0.16 | 0.22 | 58.8 |
| MUFA (g/day) | 51 (29) | 48 (13) | 0.413 | 0.09 | 0.15 | 0.21 | 56.9 |
| PUFA (g/day) | 23 (14) | 20 (8) | 0.196 | 0.16 | 0.36 | 0.47 | 66.7 |
| Omega 3 (g/day) | 2.6 (1.7) | 1.8 (1.0) | 0.006 | 0.20 | 0.23 | 0.29 | 60.8 |
| Omega 6 (g/day) | 18.4 (12.1) | 15.6 (6.9) | 0.162 | 0.20 | 0.41 | 0.47 | 60.8 |
| Trans fatty acid (g/day) | 0.9 (0.7) | 0.8 (0.7) | 0.983 | 0.11 | 0.33 | 0.39 | 56.9 |
| Retinol (µg/day) | 879 (783) | 621 (1416) | 0.255 | 0.27 | 0.31 | 0.31 | 58.8 |
| α-Carotene (µg/day) | 1083 (989) | 398 (763) | <0.001 | 0.30 | 0.40 | 0.46 | 62.7 |
| β-Carotene (µg/day) | 4451 (2929) | 1213 (1423) | <0.001 | 0.24 | 0.37 | 0.52 | 52.9 |
| β-Cryptoxanthin (µg/day) | 381 (220) | 173 (192) | <0.001 | 0.19 | 0.24 | 0.29 | 54.9 |
| Lutein-Zeaxanthin (µg/day) | 3054 (2179) | 877 (566) | <0.001 | 0.23 | 0.39 | 0.39 | 54.9 |
| Lycopene (µg/day) | 4853 (2600) | 3075 (2480) | 0.001 | 0.13 | 0.24 | 0.29 | 51.0 |
| Folate (µg/day) | 411 (188) | 229 (82) | 0.451 | 0.35 | 0.30 | 0.30 | 58.8 |
| Vitamin C (mg/day) | 190 (111) | 178 (566) | 0.889 | 0.17 | 0.09 | 0.11 | 54.9 |
| Calcium (mg/day) | 1479 (722) | 1116 (584) | 0.006 | 0.32 | 0.22 | 0.22 | 58.8 |
| Magnesium (mg/day) | 422 (197) | 315 (108) | 0.001 | 0.25 | 0.44 | 0.44 | 64.7 |
| Potassium (mg/day) | 4271 (1821) | 3176 (1143) | <0.001 | 0.21 | 0.34 | 0.34 | 62.7 |
| Sodium (mg/day) | 4662 (2435) | 4534 (1484) | 0.747 | 0.08 | 0.15 | 0.15 | 54.9 |
| Zinc (mg/day) | 15.6 (7.9) | 12.2 (3.3) | 0.006 | 0.15 | 0.15 | 0.15 | 60.8 |
| Iodine (µg/day) | 123 (55) | 80 (39) | <0.001 | 0.22 | 0.33 | 0.33 | 60.8 |
| Average of correlation coefficients | 0.21 | 0.28 | 0.32 | 59.4 | |||
1 FFQav, average of FFQ1 and FFQ2; 2 24hDRav, average of the two 24hDRs; 3 p-value from paired t-tests; 4 r, coefficient correlations after nutrient intakes were log-transformed; 5 r adj, correlation coefficient using energy-adjusted nutrient intakes; 6 deattenuated correlation coefficients after nutrient intakes were log-transformed and energy-adjusted; 7 percentage of children classified into the same or an adjacent quintile. FFQ, food frequency questionnaire; 24hDR, 24 hours dietary recall; SFA, saturated fatty acids; MUFA, monounsaturated fatty acids; PUFA, polyunsaturated fatty acids.