Table 4 Linear and binary regression between classical CVD risk and endothelial function in RA patients from the cross-sectional study

CVD risk factors

   Insulin

β = 0.13, P = 0.23

β = 0.04, P = 0.73

β = -0.04, P = 0.71

β = -0.25, R² = 0.065^a

   HOMA

β = 0.09, P = 0.41

β = -0.01, P = 0.95

β = -0.06, P = 0.61

β = -0.23, R² = 0.052^a

QUICKI

β = -0.07, P = 0.53

β = -0.02, P = 0.88

β = 0.11, P = 0.30

β = 0.30, R² = 0.095^b

   High cholesterol

OR = 1.01 (0.99-1.00)

OR = 1.00 (0.99-1.00)

OR = 1.08 (0.99-1.17)

OR = 1.09 (1.02-1.17)^a

   Hypertension

OR = 1.00 (1.00-1.00)

OR = 1.00 (0.99-1.00)

OR = 1.08 (0.99-1.17)

OR = 1.07 (1.01-1.14)^a

   Cigarette smoking

OR = 1.00 (1.00-1.00)

OR = 1.00 (1.00-1.00)

OR = 1.04 (0.97-1.13)

OR = 1.04 (0.99-1.10)

Global CVD risk

   FRS

β = -0.26, R² = 0.068^b

β = -0.18, P = 0.09

β = -0.12, P = 0.26

β = -0.32, R² = 0.101^b

   TC score

β = -0.28, R² = 0.077^a

β = -0.17, P = 0.18

β = -0.23, P = 0.08

β = -0.14, P = 0.30

   TC/HDL score

β = -0.26, R² = 0.068^a

β = -0.17, P = 0.19

β = -0.25, P = 0.05

β = -0.17, P = 0.18

   Reynolds Risk Score

β = -0.30, R² = 0.088^a

β = -0.12, P = 0.37

β = -0.27, R² = 0.072^a

β = -0.51, R² = 0.259^b

   QRISK 2

β = -0.33, R² = 0.109^b

β = -0.19, P = 0.08

β = -0.22, R² = 0.048^a

β = -0.51, R² = 0.255^b