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Table 2 Logistic regression analysis for the association between positive ESR (mm/hr), CRP (mg/L) and Platelets (109/L) tests and GCA. Each predictor is highly significant in individual, univariable regression. However, in the multivariable regression with all three predictors, both CRP and Platelets are independent predictors of GCA (p <  0.001), whereas the ESR is not (p = 0.76)

From: The utility of ESR, CRP and platelets in the diagnosis of GCA

ESR > =50 CRP > =20 Platelets> = 300 Odds Ratio (95% CI) P-value
Univariable analysis
 Pos    2.6 (1.6, 4.2) <  0.001
  Pos   4.3 (2.6, 7.1) <  0.001
   Pos 4.1 (2.5, 6.9) <  0.001
Multivariable analysis
 Neg Neg Neg 1  
 Pos Neg Neg 0.8 (0.2, 2.8) 0.73
 Neg Pos Neg 2.4 (0.7, 8.1) 0.16
 Neg Neg Pos 2.9 (1.2, 7) 0.020
 Pos Pos Neg 4.0 (1.5, 10.2) 0.004
 Pos Neg Pos 3.9 (1.4, 11.4) 0.012
 Neg Pos Pos 11.8 (2.9, 48.3) 0.001
 Pos Pos Pos 10.7 (4.8, 23.8) <  0.001