TABLE 1.
Variable | W0 (2007/2008) and W3 (2013/2014) pooled |
W0 (2007/2008) |
W3 (2013/2014) |
||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
N | Q25 | Median | Mean | Q75 | N | Q25 | Median | Mean | Q75 | N | Q25 | Median | Mean | Q75 | |
All | |||||||||||||||
Ferritin (μg /L) | 3390 | 22 | 31 | 35 | 43 | 1354 | 20 | 29 | 34 | 41 | 2036 | 23 | 32 | 36 | 44 |
Transferrin (g/L) | 3416 | 2.6 | 2.8 | 2.8 | 3 | 1360 | 2.6 | 2.8 | 2.8 | 3 | 2056 | 2.6 | 2.8 | 2.8 | 3.1 |
Age (y) | 3417 | 7.2 | 9.9 | 9.62 | 12.8 | 1361 | 4.5 | 6.4 | 6.12 | 7.7 | 2056 | 10.4 | 12.1 | 11.94 | 13.6 |
BMI z-score | 3417 | −0.4 | 0.3 | 0.4 | 1.1 | 1361 | −0.5 | 0.1 | 0.2 | 0.9 | 2056 | −0.3 | 0.4 | 0.5 | 1.2 |
CRP1 (mg/L) | 3183 | 1.9 | 2.86 | 16.52 | 9.52 | 1343 | 1.9 | 2.86 | 13.79 | 9.52 | 1840 | 0.94 | 2.88 | 18.51 | 10.14 |
Boys | |||||||||||||||
Ferritin (μg/L) | 1755 | 22 | 30 | 35.7 | 42 | 686 | 19 | 27.5 | 32.85 | 39 | 1069 | 23 | 32 | 37.53 | 44 |
Transferrin (g/L) | 1760 | 2.6 | 2.8 | 2.85 | 3.1 | 688 | 2.6 | 2.8 | 2.85 | 3.1 | 1072 | 2.6 | 2.8 | 2.85 | 3.1 |
Age (y) | 1761 | 7.3 | 9.9 | 9.63 | 12.7 | 689 | 4.4 | 6.3 | 6.08 | 7.7 | 1072 | 10.4 | 12.1 | 11.92 | 13.6 |
BMI z-score | 1761 | −0.43 | 0.3 | 0.36 | 1.07 | 689 | −0.58 | 0.09 | 0.15 | 0.84 | 1072 | −0.3 | 0.47 | 0.49 | 1.25 |
CRP1 (mg/L) | 1652 | 1.9 | 2.86 | 15.44 | 9.52 | 682 | 1.9 | 2.86 | 12.74 | 7.62 | 970 | 1 | 2.9 | 17.34 | 10.82 |
Girls | |||||||||||||||
Ferritin (μg/L) | 1635 | 22 | 31 | 35.03 | 43 | 668 | 22 | 30 | 34.99 | 42 | 967 | 22 | 31 | 35.05 | 43 |
Transferrin (g/L) | 1656 | 2.6 | 2.8 | 2.82 | 3 | 672 | 2.6 | 2.8 | 2.78 | 3 | 984 | 2.6 | 2.8 | 2.85 | 3.1 |
Age (y) | 1656 | 7.1 | 9.85 | 9.6 | 12.8 | 672 | 4.5 | 6.5 | 6.16 | 7.8 | 984 | 10.4 | 12.2 | 11.95 | 13.6 |
BMI z-score | 1656 | −0.39 | 0.29 | 0.35 | 1.07 | 672 | −0.46 | 0.15 | 0.23 | 0.88 | 984 | −0.31 | 0.42 | 0.43 | 1.19 |
CRP1 (mg/L) | 1531 | 1.9 | 3.5 | 17.68 | 10 | 661 | 1.9 | 3.81 | 14.88 | 10.48 | 870 | 0.88 | 2.88 | 19.8 | 9.44 |
Abbreviations: IDEFICS, Identification and Prevention of Dietary- and Lifestyle-Induced Health Effects in Children and Infants; W0, first examination wave; W3, third examination wave.
The conversion factor from (mg/L) to unit (μg/mL) is 1; to convert to (mg/dL) divide by 10; to calculate (nmol/L) multiply by factor 9.52.