Table 2 Results of multivariate analysis using backward stepwise logistic regression model in patients with hand joint destruction

Step 1

Education ≤ 9 years

1.11

0.54

4.26

3.01

1.16

7.64

0.038

Disease duration, years

0.18

0.05

20.37

1.22

1.13

1.51

<0.001

DAS28-ESR

0.39

0.16

5.30

1.46

1.06

2.15

0.022

DMARDs usage, yes

−2.24

1.28

3.11

0.13

0.04

1.37

0.077

Corticosteroids usage, yes

−0.76

0.45

3.06

0.48

0.21

1.09

0.080

RF positive, yes

−0.66

0.39

2.79

0.63

0.13

1.74

0.095

Anti-CCP antibody positive, yes

−0.97

0.46

5.02

1.03

0.17

1.57

0.025

Step 2

Education ≤ 9 years

1.11

0.55

4.24

3.06

1.1

8.41

0.041

Disease duration, years

0.20

0.05

21.26

1.21

1.12

1.32

<0.001

DAS28-ESR

0.38

0.16

5.43

1.45

1.16

2.17

0.020

Anti-CCP antibody positive, yes

−0.99

0.47

5.12

1.07

0.16

1.68

0.021