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 |