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Table 2 Multivariate linear regression analysis of factors associated with the severity of abdominal aortic calcification

From: A low fractional excretion of Phosphate/Fgf23 ratio is associated with severe abdominal Aortic calcification in stage 3 and 4 kidney disease patients

  Model 1 Model 2
Variable B 95% CI p B 95% CI p
Intercept −11.568 −17.218, 5.917 <0.001 −10.887 −19.151; -2.622 0.010
Male sex 1.237 0.058; 2.417 0.040 1.490 −0.075; 3.055 0.062
Age (y) 0.108 0.055; 0.162 <0.001 0.097 0.025; 0.168 0.009
CKD Stage 4 vs. 3 1.704 0.349; 3.058 0.014 N/A N/A N/A
Carotid plaque 1.978 0.560; 3.396 0.007 2.491 0.429; 4.552 0.018
FEP −0.071 −0.127; -0.015 0.013 −0.083 −0.154; -0.012 0.023
Ln(FGF23) 1.488 0.448; 2.529 0.005 1.839 0.438; 3.240 0.011
  1. Coefficient (B) and 95% confidence intervals (CI) for variables with a statistically significant (p < 0.05) contribution to explain the magnitude of abdominal aortic calcification (AAC), measured by Kauppila Index (KI), in a multivariate linear regression model including all the patients (Model 1) or patients with an estimated eGFR below 30 ml/min (Model 2). The coefficients of determination (r2) for Model 1 and 2 were 0.301 and 0.286, respectively.