Table 3.

Comparison of laterality in wrist joint damage and cortical thickness rate ratio (CTRR) in RA Patients.

	WJD Lateral (+)	WJD Lateral (−)
CTRR lateral (+)	12	12	24
CTRR lateral (−)	12	107	119
	24	119	143

CTRR: cortical thickness rate ratio = CTR (thin-side)/CTR (thick-side). CTRR lateral (+) = CTRR < 0.8. CTRR lateral (−) = CTRR ≥ 0.8. WJD: wrist joint damage. WJD lateral (+) = WJD in one hand. WJD lateral (−) = WJD in both hands or no hand. WJD lateral (+) and CTRR lateral (+) were significantly related: χ² test (p < 0.001).