Table 3. Hemoglobin and iron parameters of the 238 patients after adjusting for CKD stage.
| CKD Stage 3 | CKD Stage 4 | CKD Stage 5 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Variable | ||||||||||
| M/F | N | OR (95%CI)+++ | M/F | N | OR (95%CI)+++ | M/F | N | OR (95%CI)+++ | MH OR *** | |
| Hb <10 g/dl | 21/22 | 43 | 1.59 (.46–7.33) | 36/60 | 96 | 1.07 (.44–2.53) | 34/65 | 34 | 2.14 (.95–5.21) | 1.53 (.91–2.78) |
| Hb <11 g/dl | 21/22 | 43 | 2.21 (.32–6.19) | 36/60 | 96 | 2.20 (.75–6.31) | 34/65 | 34 | 3.0 (1.03–8.78) | 2.54 (1.33–5.21) |
| Ferritin < 100 ng/ml | 21/22 | 43 | 2.94 (.77–16.9) | 36/60 | 96 | 1.11 (.43–2.92) | 34/65 | 34 | .85 (.35–2.37) | 1.20 (.65–2.28) |
| Ferritin < 500 ng/ml | 21/22 | 43 | 6.56 (.72–15.3) | 36/60 | 96 | 1.30 (.28–4.15) | 34/65 | 34 | .43 (.10–1.43) | 1.10 (.46–2.29) |
| TSAT < 20% ** | 9/14 | 23 | 12 (1.80–79.0) | 21/41 | 62 | .71 (.24–2.24) | 25/43 | 68 | .70 (.25–2.05) | 1.03 (.51–2.08) $ |
| TSAT < 30% ** | 9/14 | 23 | Non defined | 21/41 | 62 | .36 (.10–1.45) | 25/43 | 68 | .42 (.09–1.43) | .66 (.23–1.44) $ |
| Ferritin < 100 ng/ml and/or TSAT < 20%+ | 11/17 | 28 | 9.0 (1.33–57.16) | 25/49 | 74 | .50 (.14–1.51) | 27/49 | 76 | .54 (.15–1.50) | .82 (.40–1.54) $ |
| Ferritin ≤500 ng/ml and TSAT ≤30%++ | 10/15 | 25 | 21.0 (2.5–105) | 24/45 | 69 | .60 (.13–1.84) | 25/48 | 73 | .38 (.08–1.17) | .88 (.38–1.64) $ |
Unless stated otherwise, all 95%CI were derived by bootstrapping, based on 1000 bootstrap samples.
**: Original data, 153 observations with non-missing values.
***: Mantel-Haenszel Common Odds Ratio Estimate, adjusting for CKD stage, based on 1000 bootstrap samples.
+: Due to the logical construction of the test, the common denominator is 178.
++: Due to the logical construction of the test, the common denominator is 167.
+++: Reference category: male gender.
$: MH OR not reliable due to significant interaction.