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 2

Differences in variables by ethnicity.

Variable	Whole sample	Indigenous	Non-Indigenous	value (by ethnicity)
Ferritin (µg/l)	1022 (590–1491)	1069.5 (668–1522)	558.5 (199–1252)	<0.001
Transferrin saturation (%)	26 (19–37)	26 (19–37)	28 (20–38)	0.516
Haemoglobin (g/l)	107.6 (18.2)	106.6 (18.8)	113.2 (19.0)	<0.001
Potassium (mmol/l)	4.66 (0.86)	4.7 (0.9)	4.6 (0.8)	0.398
BMI (kg/m^2)	26.8 (5.9)	26.3 (6.0)	26.4 (5.2)	0.259
CRP (mg/l)	13.9 (6.0–33.1)	14.7 (7–35)	5.9 (1.9–17.5)	<0.001
Corrected calcium (mmol/l)	2.27 (0.22)	2.26 (0.22)	2.32 (0.19)	<0.001
Albumin (g/l)	37.8 (5.5)	37.7 (5.5)	38.6 (5.4)	<0.001
Magnesium (mmol/l)	0.80 (0.14)	0.79 (0.13)	0.83 (0.16)	<0.001
Bicarbonate (mmol/l)	23.7 (4.6)	23.6 (4.7)	24.0 (4.1)	<0.001
Calcium phosphate product	3.67 (1.40)	3.66 (1.41)	3.75 (1.43)	0.163
Phosphate (mmol/l)	1.63 (0.65)	1.63 (0.65)	1.63 (0.63)	0.163
KT/V	1.61 (0.25)	1.61 (0.26)	1.61 (0.23)	0.171
URR (%)	74.6 (9.3)	74.8 (9.1)	73.2 (11.1)	0.010
ESA dose (IU per week)	11517 (8350)	11691 (8286)	9945 (8757)	<0.001

Data are median (IR) or mean (SD) as indicated.