Table 3.
Subject characteristics of adolescents (age < 18 years).
| Normal Ferritin Levels | Iron Deficiency | ||||||
|---|---|---|---|---|---|---|---|
| n | n | p | g | ||||
| Age (years) | male | 15.6 ± 1.4 | 196 | 15.1 ± 1.3 | 35 | 0.028 | 0.41 |
| female | 15.5 ± 1.6 | 125 | 15.6 ± 1.4 | 71 | 0.620 | - | |
| Height (cm) | male | 178.6 ± 10.8 | 166 | 174.0 ± 11.0 | 33 | 0.038 | 0.43 |
| female | 168.8 ± 7.0 | 99 | 169.9 ± 8.8 | 65 | 0.382 | - | |
| Weight (kg) | male | 67.7 ± 13.6 | 166 | 63.6 ± 13.8 | 33 | 0.044 | 0.37 |
| female | 61.1 ± 10.2 | 99 | 59.9 ± 9.2 | 65 | 0.420 | - | |
| BMI-SDS | male | −0.05 ± 0.77 | 166 | −0.14 ± 0.78 | 33 | 0.564 | - |
| female | 0.01± 0.87 | 99 | −0.25 ± 0.77 | 65 | 0.047 | 0.32 | |
| Body fat (%) | male | 9.6 ± 5.3 | 160 | 9.2 ± 4.7 | 30 | 0.769 | - |
| female | 18.7 ± 7.0 | 99 | 17.9 ± 5.2 | 64 | 0.860 | - | |
| Workload (W/kg) | male | 3.8 ± 0.8 | 138 | 3.7 ± 0.6 | 27 | 0.741 | - |
| female | 3.3 ± 0.5 | 82 | 3.3 ± 0.7 | 56 | 0.588 | - | |
| Heart rate (bpm) | male | 191.3 ± 11.0 | 138 | 193.2 ± 8.5 | 27 | 0.646 | - |
| female | 189.4 ± 9.5 | 82 | 188.7 ± 8.0 | 56 | 0.643 | - | |
| RRsys (mmHg) | male | 197.1 ± 25.0 | 138 | 191.8 ± 25.4 | 27 | 0.321 | - |
| female | 183.5 ± 20.6 | 82 | 190.1 ± 22.0 | 56 | 0.073 | - | |
| RRdia (mmHg) | male | 79.3 ± 9.8 | 138 | 80.8 ± 8.4 | 27 | 0.467 | - |
| female | 79.1 ± 9.1 | 82 | 79.3 ± 8.3 | 56 | 0.927 | - | |
| Lactate (mmol/L) | male | 8.90 ± 2.67 | 12 | 9.97 | 1 | - | - |
| female | 9.14 ± 2.04 | 7 | 7.14 ± 1.28 | 2 | 0.143 | - | |
| Hämoglobin | male | 14.88 ± 0.94 | 196 | 14.31 ± 0.91 | 35 | 0.001 | 0.61 |
| female | 13.39 ± 0.85 | 125 | 12.97 ± 0.95 | 71 | 0.002 | 0.48 | |
| Hämatokrit | male | 43.2 ± 2.7 | 196 | 42.0 ± 2.9 | 35 | 0.021 | 0.42 |
| female | 39.5 ± 2.5 | 125 | 38.8 ± 2.5 | 71 | 0.044 | 0.30 | |
| MCH | male | 29.4 ± 1.3 | 196 | 28.3 ± 1.1 | 35 | <0.001 | 0.85 |
| female | 29.3 ± 1.4 | 125 | 28.5 ± 1.7 | 71 | 0.002 | 0.49 | |
| MCHC | male | 34.5 ± 0.9 | 196 | 34.2 ± 1.0 | 35 | 0.078 | - |
| female | 34.0 ± 0.9 | 125 | 33.5 ± 1.0 | 71 | 0.002 | 0.52 | |
| MCV | male | 84.9 ± 3.3 | 196 | 83.0 ± 2.6 | 35 | 0.003 | 0.59 |
| female | 86.3 ± 3.1 | 125 | 84.9 ± 3.6 | 71 | 0.011 | 0.40 | |
| Ferritin | male | 64.9 ± 32.2 | 196 | 21.1 ± 6.3 | 35 | <0.001 | 1.47 |
| female | 56.6 ±46.3 | 125 | 17.8 ± 6.6 | 71 | <0.001 | 1.04 | |
| Eisen | male | 106.4 ± 40.1 | 196 | 83.2 ± 29.5 | 35 | 0.002 | 0.57 |
| female | 101.2 ± 38.8 | 125 | 80.8 ± 50.1 | 71 | <0.001 | 0.47 | |
| Transferrin | male | 274.7 ± 32.9 | 196 | 302.0 ± 32.9 | 35 | <0.001 | −0.83 |
| female | 281.3 ± 35.5 | 125 | 320.0 ± 46.5 | 71 | <0.001 | −0.97 | |
| Lösl. Rezeptor | male | 3.40 ± 0.43 | 18 | 3.66 ± 0.82 | 35 | 0.127 | - |
| female | 3.14 ± 0.89 | 32 | 3.52 ± 1.15 | 71 | 0.028 | −0.35 | |
| Trans.Sättigung | male | 28.1 ± 12.2 | 196 | 19.8 ± 7.4 | 35 | <0.001 | 0.71 |
| female | 25.8 ± 9.9 | 125 | 18.1 ± 10.1 | 71 | <0.001 | 0.77 | |