Table 3.

Intraclass correlation coefficients of inter‐rater and test‐retest reliability by the summed total six joint CAJAS score and individual joint scores

	Inter‐rater ICC (95% CI)	Test‐retest ICC (95% CI)
CAJAS total	0.88 (0.77‐0.94)	0.98 (0.95‐0.99)
Left ankle total	0.76 (0.56‐0.88)	0.92 (0.84‐0.96)
Right ankle total	0.86 (0.73‐0.93)	0.93 (0.86‐0.97)
Left elbow total	0.84 (0.69‐0.92)	0.97 (0.94‐0.99)
Right elbow total	0.91 (0.82‐0.96)	0.98 (0.97‐0.99)
Left knee total	0.84 (0.69‐0.92)	0.93 (0.85‐0.96)
Right knee total	0.82 (0.66‐0.91)	0.95 (0.89‐0.97)

Inter‐rater reliability was analyzed by a two‐way random‐effects model of consistency; test‐retest reliability was analyzed by a two‐way mixed‐effects model of absolute agreement.

Abbreviations: CAJAS, Colorado Adult Joint Assessment Scale; CI, confidence interval; ICC, intraclass correlation coefficients.