Table 3 Linear regression analysis of carotid intima-media thickness, rheumatoid arthritis features and cardiovascular risk factors in recent-onset rheumatoid arthritis patients

Univariate model

   Number of swollen joints

0.12

0.391

0.041

2.25

0.032

0.008–0.174

   Disease activity score (DAS4v)^a

0.16

0.431

0.079

2.74

0.01

0.056–0.377

   C-reactive protein level (mg/l)^a

0.14

0.407

0.025

2.71

0.01

0.018–0.121

   Rheumatoid factor presence^b

0.047

0.54

0.072–0.117

   Age at onset of rheumatoid arthritis^a

0.56

0.759

0.001

7.19

<0.001

0.008–0.014

   Male sex^b

0.066

0.018

-0.298 to -0.030

   Pack-year history

0.10

0.320

0.001

2.09

0.044

0.000–0.005

   History of smoking, ever^b

0.062

0.002

-0.329 to -0.079

   Systolic blood pressure^a

0.27

0.540

0.184

3.63

<0.001

0.292–1.040

   Cholesterol level

0.01

0.146

0.197

0.82

0.417

-0.564 to -0.239

Multivariate model

   Age at onset of rheumatoid arthritis

0.64

0.002

6.11

<0.001

0.007–0.012

   C-reactive protein level (mg/l)

0.001

2.18

0.038

0.000–0.004