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Table 2 Relationship between serum sodium and clinical parameters in insomnia patients

From: Lower serum sodium levels predict poor clinical outcomes in patients with insomnia

  Univariable Multivariable
β P β P
Age (yr) −0.02 0.072 0.02 0.055
Sex (ref. male) 0.92 0.013 0.85 0.057
Hemoglobin (mg/dL) 0.23 0.011 0.03 0.824
Calcium (mg/dL) 1.16 <  0.001 −0.52 0.272
Phosphorus (mg/dL) 0.45 0.095 −0.18 0.542
Glucose (g/dL) −0.01 0.086 −0.01 0.462
Uric acid (mg/dL) 0.35 0.003 0.30 0.031
Albumin (g/dL) 1.65 <  0.001 1.71 < 0.001
Cholesterol (mg/dL) 0.02 <  0.001 0.01 0.619
Charlson Comorbidity Index Score −0.36 <  0.001 −0.23 0.107
Use of thiazide −0.03 <  0.001 −0.24 0.749
  1. β regression coefficient with serum sodium level, eGFR estimated glomerular filtration rate
  2. Adjusted R-squared: 0.1019, AIC = 1810.452, BIC = 1837.088
  3. Adjusted R-squared: 0.1149, AIC = 1820.215, BIC = 1843.045