Table 3 Clinical characteristics of patients with rheumatoid arthritis and non-rheumatoid arthritis in the validation phase

Pain

6.1 ± 1.6

5.8 ± 1.6

0.3

3.4 ± 2.3

4.3 ± 1.8

<0.05

Swollen joint count

2.3 ± 2.4

1.4 ± 2.3

0.02

2.3 ± 4.3

1.1 ± 2.0

0.06

Tender joint count

13.0 ± 8.5

13.9 ± 10.5

0.7

12.0 ± 13.1

11.1 ± 8.9

0.8

CRP, mg/dl

0.5 ± 0.6

0.2 ± 0.3

0.03

0.4 ± 0.6

0.2 ± 0.1

0.1

DAS28

3.7 ± 0.8

3.3 ± 0.8

0.1

3.2 ± 1.0

3.1 ± 0.8

0.7

RADAI

5.0 ± 1.4

4.6 ± 1.2

0.2

3.7 ± 1.53

4.0 ± 1.33

0.4

HAQ

1.2 ± 0.6

1.1 ± 0.4

0.8

1.0 ± 0.5

1.1 ± 0.4

0.2

Grip strength, Pascal

40.2 ± 21.8

35.8 ± 17.6

0.4

 38.4 ± 22.1

43.4 ± 26.2

0.5