Figure 1
From: Relationship between handedness and joint involvement in rheumatoid arthritis
More clinical joint involvement on the dominant side in patients with RA.
The difference in SJC and TJC, jointly or separately, between the two sides is shown for right-handed and left-handed patients. The red line indicates the mean value. The blue line shows the zero point. The score differences were assessed by Student t-test. X-axis: The score differences between the two sides (the right-side score minus the left-side score). Y-axis: The number of patients. (a) Upper + Lower extremities (b) Upper extremities (c) Lower extremities.
