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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