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Table 2 Univariate associations of the inflammatory markers (ESR and CRP) with age, sex, and BMI at baseline

From: How age and sex affect the erythrocyte sedimentation rate and C-reactive protein in early rheumatoid arthritis

Univariate association*

Unstandardized coefficient

Standardized coefficient

p-value

 

Beta (95%CI)

Standard error

Beta (95%CI)

 

ESR

    

  Age

0.019 (0.014 - 0.024)

0.003

0.296 (0.219 – 0.373)

<0.001

  Female sex

0.136 (-0.018 - 0.290)

0.078

0.072 (-0.009 – 0.152)

0.083

  Overweight

0.048 (-0.126 - 0.222)

0.088

0.026 (-0.067 – 0.118)

0.587

  Obese

0.190 (-0.027 - 0.407)

0.110

0.081 (-0.011 – 0.173)

0.086

CRP

    

  Age

0.013 (0.007-0.020)

0.003

0.164 (0.084 – 0.244)

<0.001

  Female sex

-0.183 (-0.372 – 0.006)

0.096

-0.078 (-0.159 – 0.002)

0.057

  Overweight

0.248 (0.035 – 0.462)

0.109

0.108 (0.015 – 0.200)

0.023

  Obese

0.250 (-0.018 – 0.517)

0.136

0.086 (-0.006 – 0.179)

0.067

  1. *Analyses were performed on the naturally log-transformed ESR and CRP values to normalize their distributions.
  2. ESR = erythrocyte sedimentation rate, CRP = C-Reactive Protein, CI = confidence interval. The males and normal weight patients were used as reference categories.