Table 4.
Hemoglobin, transferrin saturation, and ferritin levels stratified by CKD stage.
| Total (n = 437) | I (n = 79) | II (n = 119) | IIIa ※ (n = 74) | IIIb ※ (n = 71) | IV (n = 77) | V (n = 17) | P Value | |
|---|---|---|---|---|---|---|---|---|
| Hemoglobin (g/dL) | 12.22 ± 1.94 | 13.1 ± 1.46 | 13.03 ± 1.73 | 12.34 ± 1.75 | 11.75 ± 1.77 | 10.85 ± 1.72 | 10.14 ± 2.17 | <0.001 * |
| Male | 12.37 ± 2.01 | 13.41 ± 1.49 | 13.21 ± 1.83 | 12.48 ± 1.67 | 11.84 ± 1.82 | 10.84 ± 1.8 | 10.38 ± 2.18 | <0.001 * |
| Female | 11.9 ± 1.74 | 12.39 ± 1.14 | 12.65 ± 1.46 | 12.05 ± 1.93 | 11.58 ± 1.69 | 10.87 ± 1.56 | 9.58 ± 2.31 | <0.001 * |
| Transferrin saturation (%) | 27.54 ± 15.97 | 27.87 ± 23.68 | 26.06 ± 12.56 | 26.88 ± 14.12 | 29.34 ± 13.66 | 27.19 ± 13.29 | 33.19 ± 20.44 | 0.449 * |
| Male | 27.47 ± 16.02 | 28.65 ± 26.55 | 27.43 ± 12.57 | 25.55 ± 12.13 | 28.32 ± 10.63 | 26.74 ± 13.34 | 30.32 ± 15.85 | 0.722 * |
| Female | 27.68 ± 15.92 | 25.91 ± 14.51 | 23.03 ± 12.19 | 29.58 ± 17.48 | 31.23 ± 18.06 | 28.25 ± 13.41 | 40.1 ± 29.93 | 0.338 * |
| Ferritin (ng/mL) | 99.47 ± 211.51 | 53.27 ± 51.2 | 81.58 ± 135.93 | 83.15 ± 131.44 | 122.96 ± 335.38 | 139.63 ± 284.45 | 201.81 ± 231.99 | <0.001 * |
| Male | 93.43 ± 172.19 | 60.25 ± 57.3 | 78.42 ± 75.42 | 77 ± 111.18 | 61.98 ± 59.64 | 171.92 ± 342.43 | 191.83 ± 263.38 | <0.001 * |
| Female | 112.75 ± 279.6 | 33.51 ± 16.37 | 88.6 ± 218.8 | 96.26 ± 168.89 | 239.62 ± 555.72 | 75.03 ± 60.18 | 225.78 ± 153.27 | 0.013 * |
CKD, chronic kidney disease; n, number of patients; ※ CKD stage III is divided into subgroup stage IIIa and IIIb according to the eGFR (estimated glomerular filtration rate), stage IIIa is an eGFR between 45 and 59 and Stage 3b is an eGFR between 30 and 44; * Statistical significance was demonstrated using the Kruskal–Wallis test.