Table 2 Regression coefficients and OR (95% CI) of best models based on backwards regression analysis for the progression of carotid plaque over 3 years in RA patients

Age

0.036 (0.014)

1.037 (1.010–1.065)^**

0.040 (0.014)

1.041 (1.012–1.070)^**

–

–

–

–

Hypercholesterolemia

0.896 (0.381)

2.450 (1.162–5.164)^*

1.024 (0.393)

2.784 (1.290–6.010)^**

0.963 (0.390)

2.621 (1.221–5.624)^*

1.099 (0.404)

3.002 (1.360–6.626)^**

Smoking: ever and current

0.611 (0.212)

1.843 (1.217–2.791)^**

0.649 (0.216)

1.913 (1.252–2.924)^*

0.903 (0.261)

2.467 (1.480–4.111)^**

0.988 (0.272)

2.687 (1.577–4.579)^***

Presence of carotid plaque

0.992 (0.288)

2.697 (1.534–4.739)^**

1.002 (0.295)

2.723 (1.527–4.853)^**

1.291 (0.282)

3.637 (2.095–6.316)^***

1.353 (0.291)

3.869 (2.190–6.838)^***

Serum CTX-I (pg/mL)

NA

NA

1.539 (0.667)

4.662 (1.262–17.219)

NA

NA

1.718 (0.731)

5.574 (1.331–23.341)^*

BMD radius (g/cm²)

NA

NA

NA

NA

–3.057 (1.193)

0.047 (0.005–0.488)^*

–3.667 (1.250)

0.026 (0.002–0.296)^**

R² (%)