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Table 1 Demography and lab parameters

From: Heavy metal association with chronic kidney disease of unknown cause in central India-results from a case-control study

Population Characteristics

CKD, N = 62

CKDu, N = 60

Healthy, N = 54

P-value

P-value for Pair-wise comparisons by Dunn’s test

CKD vs. CKDu

CKD vs. Healthy

CKDu vs. Healthy

Age (Years)

43.0 (32.0, 52.0)

44.0 (36.0, 50.0)

31.0 (27.0, 39.8)

< 0.001*

0.7

  

Male

29 (46.8)

26 (43.3)

33 (61.1)

0.136*

   

Female

33 (53.2)

34 (56.7)

21 (38.9)

   

SBP (mmHg)

142.0 (138.0, 154.0)

138.0 (124.0, 144.0)

125.0 (116.8, 132.0)

< 0.001**

< 0.001

< 0.001

< 0.001

DBP (mmHg)

89.5 (83.0, 97.8)

89.0 (80.0, 94.0)

86.0 (73.2, 89.0)

< 0.001**

0.11

< 0.001

0.015

Smoking (yes)

5 (8.2%)

2 (3.4%)

4 (7.4%)

0.4#

0.5

0.7

0.3

Alcohol use (yes)

4 (6.6%)

7 (12%)

3 (5.6%)

0.4#

0.3

0.8

0.2

Painkillers use(yes)

1 (1.6%)

6 (10%)

1 (1.9%)

0.08#

0.028

> 0.9

0.037

Pesticide use(yes)

7 (12%)

12 (20%)

1 (1.9%)

0.01#

0.15

0.1

0.002

Source drinking water (Surface water)

15(24)

25(42)

10(18)

0.016*

0.04

0.458

0.007

ACR1st (mcg/mg)

1,259.4 (487.0, 3,253.6)

321.9 (56.4, 611.6)

13.7 (6.8, 17.4)

< 0.001**

< 0.001

< 0.001

0.1

ACR2nd (mcg/mg)

988.1 (370.5, 2,314.0)

315.8 (98.9, 584.0)

15.0 (8.8, 19.2)

< 0.001**

< 0.001

< 0.001

0.024

PCR (gm/gm)

3.1 (2.0, 5.8)

1.1 (0.4, 1.8)

0.040 (0.020, 0.075)

< 0.001**

0.00

0.00

0.00

HbA1C (pct)

5.4 (5.1, 5.7)

5.4 (5.1, 5.8)

5.8 (5.2, 6.0)

0.12**

> 0.9

0.4

0.12

Sr.Creatinine (mg/dL)

6.1 (3.5, 10.7)

3.8 (1.9, 7.2)

0.8 (0.7, 0.9)

< 0.001**

0.002

< 0.001

< 0.001

eGFR (ml/min/1.73m2)

9.0 (6.0, 17.0)

14.5 (7.0, 34.2)

109 (95.0,122.0)

< 0.001**

0.08

0.000

0.000

  1. Median (IQR); n (%) p-values for three group comparison without any superscript was obtained by Kruskal-Wallis rank sum test ** for three group comparison; *Pearson’s Chi-squared test; #Fisher Freeman Halton test CKD-chronic kidney disease, CKDu Chronic kidney disease of unknown cause, SBP Systolic blood pressure, DBP Diastolic blood pressure, ACR_1st Albumin creatinine ratio on 1st visit, ACR_2nd Albumin creatinine ratio on 2nd visit, Sr Serum, eGFR Estimated glomerular filtration rate, PCR Protein creatinine ratio