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Table 2 Multivariate linear regression for serum calcium in CKD stage 3–4 patients

From: Low serum calcium is associated with poor renal outcomes in chronic kidney disease stages 3–4 patients

Variables β coefficient 95% CI p-value
Age, yrs -0.001 -0.003 to 0.001 0.370
Gender (male vs. female) 0.143 0.084 to 0.202 <0.001
Diabetes mellitus 0.088 0.030 to 0.147 0.003
Cardiovascular disease -0.102 -0.163 to -0.041 0.001
Mean BP, mmHg 0.001 -0.001 to 0.003 0.145
Body mass index, kg/m2 0.002 -0.005 to 0.009 0.562
eGFR, ml/min/1.73 m2 -0.004 -0.006 to -0.001 0.010
Hemoglobin, g/dL 0.025 0.009 to 0.041 0.003
Albumin, g/dL -0.211 -0.270 to -0.151 <0.001
Log (Cholesterol) 0.467 0.222 to 0.711 <0.001
Ln (CRP) 0.010 -0.020 to 0.040 0.504
HbA1c,mg/dL; 0.036 0.019 to 0.054 <0.001
Log (UPCR) -0.110 -0.168 to -0.052 <0.001
Phosphorus, mg/dL -0.062 -0.097 to -0.027 <0.001
PTH, pg/mL -0.002 -0.002 to -0.002 <0.001
Phosphate binder -0.031 -0.105 to 0.044 0.419
  1. CKD, Chronic kidney disease; BP, Blood pressure; eGFR, Estimated glomerular filtration rate; CRP, C-reactive protein; HbA1c, Glycosylated hemoglobin; UPCR, Urine protein to creatinine ratio; PTH, parathyroid hormone.
  2. P <0.05 indicates a significant associated with serum calcium levels.
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