Assessing the Association between Serum Ferritin, Transferrin Saturation, and C-Reactive Protein in Northern Territory Indigenous Australian Patients with High Serum Ferritin on Maintenance Haemodialysis
Table 5
Results of two-level (multilevel) multinomial logistic regression: final model.
Predictor
Ferritin (µg/l) categories
Category 2 ≥ 100 < 800
Category 3 ≥ 800 < 1200
Category 4 ≥ 1200
TSAT ≥ 20% and ≤30%
1.58
2.31
2.35
<0.001
<0.001
<0.001
1.39–1.77
2.12–2.51
2.15–2.54
TSAT > 30% and ≥50%
2.28
3.33
3.67
<0.001
<0.001
<0.001
1.98–2.57
3.03–3.63
3.37–3.96
TSAT > 50%
2.67
4.15
4.99
<0.001
<0.001
<0.001
2.02–3.32
3.50–4.80
4.34–5.64
Non-Indigenous ethnicity
−2.46
−3.43
−3.53
<0.001
<0.001
<0.001
−2.88–−2.04
−3.85–−3.00
−3.96–−3.11
Male gender
1.49
1.33
1.19
<0.001
<0.001
<0.001
1.13–1.86
0.96–1.70
0.82–1.56
CRP ≥ 10 mg/l
−0.04
−0.07
−0.09
0.693
0.513
0.375
−0.24–0.16
−0.28–0.14
−0.30–0.11
Data are coefficient, value, and 95% confidence interval. Reference groups for categorical variables are TSAT < 20%, female gender, Indigenous ethnicity, and CRP < 10 mg. Compared to base outcome of ferritin category 1 (serum ferritin < 100 µg/l).
