Table 4.

Selected laboratory results for participants in the KIND registry by kidney disease type (n = 2,912)

Variable	Type of kidney disease or Kidney Replacement Therapy (KRT)
	Glomerulonephritis	Hemodialysis	Peritoneal dialysis	Transplant
	Median (IQR)
Systolic blood pressure (mmHg)
Initial value	135 (123 – 148)	138 (127 – 151)	132.5 (121.5—148.5	136 (124 – 148)
6 months later	132 (122 – 146)	135 (124—147)	131.5 (115 -149.5)	131 (122—145)
Diastolic blood pressure (mmHg)
Initial value	77 (69—85)	78.5 (69—86)	76.5 (70—89)	78 (70 – 86)
6 months later	75 (66—83)	75 (66—84)	78 (69.5—87.5)	76 (67 – 84)
eGFR (mL/min/1.73m2)
Initial value	33.5 (15—53)	28 (12—49)	19 (10—50)	34 (17—51)
6 months later	36 (15 – 60)	26 (11—53)	16.5 (8—36)	37 (15.5 -57)
Serum creatinine (U/L)
Initial value	173 (108—331)	219 (144—438)	205 (120—370)	179 (129—329)
6 months later	163 (100 – 348)	229 (126—493)	352.5 (156—649)	178.5 (114.5 -395.5)
Serum albumin g/L
Initial value	34 (28 – 38)	34 (29—38)	35 (28—38)	36 (31—40)
6 months later	38 (34 – 42)	38 (34 – 42)	37 (33—43)	41 (35—43)
ESR (mm/hr)
Initial value	48 (24—77)	49 (21—76)	80 (30—120)	33.5 (16 – 70)
6 months later	40 (24 – 66)	40 (25—77)	24 (19—55)	40 (24—79)
PCR (mg/mg)
Initial value	5.3 (1.5 -14.9)	4.8 (0.9—12.5)	1.2 (0.5—2.3)	3.1 (0.5—12.2)
6 months later	3.0 (1.1—12.9)	3.2 (1.2 – 10.0)	0.7 (0.2—1.1)	2.1 (0.4—8.7)
Urea reduction ratio (%)
Initial value		73 (68—78)
6 months later		74 (69—79)
Hemoglobin (g/L)
Initial value	109 (92—127)	100 (86—116.5)	100 (87—116)	107 (93 – 123)
6 months later	126 (112 – 139)	121 (107 – 135)	114 (100 – 131)	135 (120 – 148)
Corrected calcium (mmol/L)
Initial value	2.3 (2.2—2.4)	2.2 (2.1—2.3)	2.3 (2.1—2.4)	2.2 (2.1—2.4)
6 months later	2.3 (2.2—2.4)	2.3 (2.2—2.4)	2.3 (2.2—2.4)	2.3 (2.3—2.4)
Phosphorus (mmol/L)
Initial value	1.4 (1.1—1.8)	1.5 (1.2—2.0)	1.7 (1.3—2.0)	1.4 (1.1—1.8)
6 months later	1.3 (1.1—1.5)	1.2 (1.0—1.5)	1.3 (1.1—1.7)	1.2 (1.0—1.3)
Potassium (mmol/L)
Initial value	4.3 (4.0—4.8)	4.4 (4.0—5.0)	4.3 (3.8—4.8)	4.3 (3.9—4.9)
6 months later	4.4 (4.0—4.8)	4.5 (4.1—5.0)	4.4 (3.9—4.8)	4.3 (4.0—4.6)
Complement Component 3 (G/L)
Initial value	1.1 (0.9–1.3)
6 months later	1.0 (0.8–1.1)
Complement Component 4 (G/L)
Initial value	0.3 (0.2–0.4)
6 months later	0.3 (0.2–0.4)
Anti-DNA (IU/mL)
Initial value	16.0 (8.0–31.0)
6 months later	15.6 (7.2–34.8)
Perinuclear anti-neutrophil cytoplasmic antibodies (p-ANCA) (U/mL)
Initial value	2.1 (1.4–3.7)
6 months later	2.5 (1.4–7.0)
cytoplasmic anti-neutrophil cytoplasmic antibody (cANCA) (U/mL)
Initial value	2.3 (1.8–3.5)
6 months later	2.1 (1.3–2.6)
Anti-glomerular basement membrane (Anti-GBM) (U/mL)
Initial value	1.2 (0.7–2.0)
6 months later	0.7 (0.3–7.8)
Parathyroid Hormone (PTH) (pmol/L)
Initial value	46.6 (21.5–97.6)
6 months later	31.3 (13.6–85.7)
Hepatitis B surface antigen (HBsAg) (%)
Negative	476 (62.6)
Positive	12 (1.6)
Unknown	273 (35.9)
Hepatitis C (HCV) (%)
Negative	445 (58.5)
Positive	28 (3.7)
Unknown	288 (37.8)
Human immunodeficiency virus (HIV) (%)
Negative	22 (2.9)
Positive	1 (0.1)
Unknown	738 (97.0)
Dialysis details
Average number of dialysis sessions/ week (± SD)		3.0 (0.2)
Average number of hours/ dialysis session (± SD)		3.6 (0.4)

Initial value refers to laboratory results closest to the diagnosis date ± 3 months, while the 6-month follow up summarizes laboratory results for 6 months following the initial value