Table 2 Content validity index of item relevancy and clarity, and Modified Kappa agreement of the Australian and Canadian Osteoarthritis Index (AUSCAN)
Item | Relevance | Clarity | Interpretation | ||||||
|---|---|---|---|---|---|---|---|---|---|
Agreement | I-CVI* | Pc** | K*** | Agreement | I-CVI* | Pc** | K*** | Â | |
Rate your pain | |||||||||
 At rest | 49/57 | 0.86 | <  10 −5 | 0.86 | 49/50 | 0.98 | <  10 − 5 | 0.98 | Excellent |
 Gripping | 55/57 | 0.96 | <  10 − 5 | 0.96 | 49/49 | 1.00 | <  10 −5 | 1.00 | Excellent |
 Lifting | 55/57 | 0.96 | <  10 −5 | 0.96 | 49/50 | 0.98 | <  10 −5 | 0.98 | Excellent |
 Turning | 54/57 | 0.95 | <  10 −5 | 0.95 | 46/50 | 0.92 | <  10 −5 | 0.92 | Excellent |
 Squeezing | 55/57 | 0.96 | <  10 −5 | 0.96 | 50/50 | 1.00 | <  10 −5 | 1.00 | Excellent |
Rate your stiffness | |||||||||
 After first wakening in the morning | 52/56 | 0.93 | <  10 −5 | 0.93 | 48/48 | 1.00 | <  10 − 5 | 1.00 | Excellent |
Rate your difficulty when | |||||||||
 Turning taps/faucets on | 51/58 | 0.88 | <  10 −5 | 0.88 | 51/51 | 1.00 | <  10 −5 | 1.00 | Excellent |
 Turning a round doorknob or handle | 54/59 | 0.92 | <  10 −5 | 0.92 | 53/53 | 1.00 | <  10 − 5 | 1.00 | Excellent |
 Doing up buttons | 52/59 | 0.88 | <  10 −5 | 0.88 | 52/52 | 1.00 | <  10 −5 | 1.00 | Excellent |
 Fastening jewellery | 52/59 | 0.88 | <  10 − 5 | 0.88 | 53/53 | 1.00 | <  10 − 5 | 1.00 | Excellent |
 Opening a new jar | 57/59 | 0.97 | <  10 −5 | 0.97 | 53/53 | 1.00 | <  10 − 5 | 1.00 | Excellent |
 Carrying a full pot with one hand | 56/59 | 0.95 | <  10 − 5 | 0.95 | 52/53 | 0.98 | <  10 −5 | 0.98 | Excellent |
 Peeling vegetables/fruits | 56/59 | 0.95 | <  10 −5 | 0.95 | 53/53 | 1.00 | <  10 −5 | 1.00 | Excellent |
 Picking up large heavy objects | 55/59 | 0.93 | <  10 − 5 | 0.93 | 51/51 | 1.00 | <  10 − 5 | 1.00 | Excellent |
 Wringing out wash cloths | 52/59 | 0.88 | <  10 − 5 | 0.88 | 50/51 | 0.98 | <  10 −5 | 0.98 | Excellent |
S - CVI | 0.92 (95% CI: 0.90 to 0.94) | Â | 0.99 (95% CI: 0.98 to 1.00) | Â | Â | ||||