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Table 3 Hierarchical multiple regression analyses predicting Power Doppler determined (PD) synovitis score by calprotectin and C-reactive protein (CRP)

From: Serum calprotectin (S100A8/9): an independent predictor of ultrasound synovitis in patients with rheumatoid arthritis

 

Δ R 2

b (Standard error)

Std. b

P

Step 1

0.757

  

0.000

Calprotectin

 

0.001 (0.00)

0.870

0.000

Step 2

0.765

  

0.576

Calprotectin

 

0.001 (0.00)

0.870

0.000

Sex

 

0.491 (0.67)

0.068

0.471

Age

 

0.019 (0.02)

0.091

0.331

Step 1

0.495

  

0.000

CRP

 

0.215 (0.04)

0.704

0.000

Step 2

0.496

  

0.989

CRP

 

0.215 (0.04)

0.701

0.000

Sex

 

0.022 (1.07)

0.003

0.984

Age

 

−0.004 (0.03)

−0.018

0.898

  1. Note: sex was coded as 0 = males and 1 = females. Std. standardised