Table 5.

Comparison of content validity index (S-CVI) of relevance and clarity

Relevance				Clarity
	PRWHE	TDX	AUSCAN		PRWHE	TDX	AUSCAN
PRWHE	0.85 (95% CI: 0.82–0.88)	Paired t-Test	Paired t-Test	PRWHE	0.95 (95% CI: 0.93–0.97)	Wilcoxon Signed ranks	Wilcoxon Signed ranks
TDX	p = 0.523	0.87 (95% CI: 0.85–0.89)	Paired t-Test	TDX	p = 0.153	0.91 (95% CI: 0.89–0.94)	Wilcoxon Signed ranks
AUSCAN	p < 0.001	p = 0.001	0.92 (95% CI: 0.90–0.94)	AUSCAN	p = 0.001	p = 0.002	0.99 (95% CI: 0.98–1.00)

Paired t-Test: Student’s t-Test for Matched Pairs; Wilcoxon Signed Ranks: Wilcoxon Matched-Pairs Signed-Ranks

AUSCAN Australian and Canadian Osteoarthritis Index, TDX Thumb Disability Exam, PRWHE Patient Rated Wrist/Hand Evaluation