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Table 2 Hand strength of participants in the rheumatoid arthritis group (RAG) and the control group (CG)

From: Hand strength in patients with RA correlates strongly with function but not with activity of disease

Strength test

RAG

CG

CG-RAG difference

Mean ± SD (kgf)

(%)

P

Handgrip R

17.74 ± 9.23

25.94 ± 8.33

30

<  0.01

Handgrip L

17.34 ± 8.87

25.85 ± 8.32

31

<  0.01

2-point tip-to-tip pinch R

3.47 ± 1.56

5.24 ± 1.49

32

<  0.01

2-point tip-to-tip pinch L

3.33 ± 1.58

4.98 ± 1.39

31

<  0.01

3-point R

4.55 ± 1.99

6.87 ± 2.10

32

<  0.01

3-point L

4.50 ± 2.05

6.57 ± 1.95

30

<  0.01

Lateral pinch R

6.02 ± 2.40

7.79 ± 1.96

21

<  0.01

Lateral pinch L

5.60 ± 2.31

7.26 ± 1.86

21

< 0.01

  1. kgf: kilogram-force; R: right; L: left. Independent t-test