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Table 2 The correlation between clinical parameters and 25(OH)D level at the time of kidney biopsy

From: Vitamin D deficiency may predict a poorer outcome of IgA nephropathy

Variables Serum 25-hydroxyvitamin (ng/mL) P-value
  ≥15 ng/mL <15 ng/mL  
Age (years) 36.19 ± 10.86 32.87 ± 13.62 0.18
Body mass index (kg/m2) 23.05 ± 2.86 23.39 ± 3.57 0.59
Systolic blood pressure (mmHg) 123.95 ± 17.26 140.52 ± 26.96 0.001
Diastolic blood pressure (mmHg) 76.66 ± 14.47 87.87 ± 17.70 0.001
Proteinuria(g/24 h) 1.23 ± 1.27 3.07 ± 2.06 <0.001
eGFR (mL/min/1.73 m2) 83.42 ± 32.64 65.24 ± 44.56 0.023
 CKD stage 1(n/%) 18 (45 %) 22 (55 %) 0.069
 CKD stage 2(n/%) 16 (57.1 %) 12 (42.9 %)  
 CKD stage 3(n/%) 8 (38.1 %) 13 (61.9 %)  
 CKD stage 4(n/%) 1 (16.7 %) 5 (83.3 %)  
 CKD stage 5(n/%) 1 (10 %) 9 (90 %)  
Serum albumin (mg/dL) 38.08 ± 5.02 28.50 ± 7.72 <0.001
Serum total cholesterol (mg/dL) 5.14 ± 1.21 6.57 ± 2.64 <0.001
Serum IgA (mg/dL) 3.15 ± 2.24 2.73 ± 1.38 0.27
Uric acid (mg/dL) 374.31 ± 112.68 443.93 ± 127.11 0.004
  1. eGFR, estimated glomerular filtration rate