Table 1. The differences in various variables between the control and CKD groups

				CKD groups (N=27)
Parameters	Control (N=17)	Early stagea		Late stageb		P value
SNHR (×10‐2 ppb)	0.16 (0.15–0.19)	0.17 (0.14–0.18)	N=34	0.20 (0.17–0.24)c	N=16	0.035
Age (year)	4.94 (1–7.5)	9.24 (5.75–13)c	N=34	14 (8.75–16)cd	N=18	<0.001
Creatinine (mg/dL)	1.60 (1.2–1.7)	2.00 (1.9–2.32)	N=34	3.55 (3.07–4.52)cd	N=18	<0.001
BUN (mg/dL)	22 (19–25.5)	23 (21.75–31)	N=34	40.5 (33–64)cd	N=18	<0.001
Hematocrit (%)	42.56 (37.56–48.85)	40.10 (37.15–42.63)	N=34	33.86 (26.95–38.4)cd	N=17	<0.001
RBC (106/μL)	8.63 (7.53–9.65)	8.29 (7.65–9.31)	N=34	7.30 (6.13–8.05)c	N=17	0.034
Hemoglobin (g/L)	14.44 (13–16.12)	13.69 (12.6–14.45)	N=34	11.46 (9.5–12.75)cd	N=17	<0.001
Platelet (K/μL)	223 (133–280)	283 (219–380)	N=33	287 (213–423)	N=17	0.125
Albumin (g/dL)	3.60 (3.35–3.75)	3.48 (3.15–3.7)	N=25	3.27 (2.98–3.43)	N=14	0.064
Phosphate (mg/dL)	‐	4.55 (3.95–5.1)	N=24	4.90 (4.2–6)	N=18	0.121
Total calcium (mg/dL)	‐	10.6 (10.33–11.3)	N=10	11.5 (10.5–15)	N=7	0.105
USG	1.05 (1.04–1.05)	1.02 (1.01–1.03) c	N=34	1.01 (1–1.02)c	N=18	<0.001
Urinary pH	6.45 (5.94–6.87)	6.40 (5.93–6.65)	N=34	5.98 (5.93–6.4)	N=18	0.030
UPC	0.02 (0.02–0.02)	0.075 (0.02–0.16)c	N=34	0.19 (0.11–1.04)cd	N=18	<0.001
Sodium (mEq/L)	157. (155–158.7)	155.65 (154–157.8)	N=24	155.25 (153.6–158.9)	N=18	0.699
Potassium (mEq/L)	3.96 (3.7–4.03)	3.84 (3.6–4.03)	N=24	4.10 (3.71‐4.3)	N=18	0.080
Chloride (mEq/L)	118.3 (117.6–120.5)	118.1 (116.9–120.3)	N=24	118.4 (116.5–122.9)	N=18	0.857

Variables were tested with Kruskal Wallis Test and represented as the median (inter quartile range, IQR). The post hoc analysis was Dunn's test. Abbreviation: SNHR, serum NTBI‐to‐hematocrit ratio; BUN, Blood urea nitrogen; USG, urine specific gravity; UPC, urine protein‐to‐creatinine ratio a: IRIS stage I and stage II b: IRIS stage III and stage IV c: Achieved significance with control group. d: Achieved significance with early stage group.