Agreement level between the methods | Limits of agreement between the methods* | ||||
---|---|---|---|---|---|
Kappa value | 95% CI | Mean difference | Lower limit | Upper limit | |
ASDAS CRP vs ASDAS CRP imputed for three BASDAI items | 0.8 | 0.74 to 0.85 | 0.07 | −0.4 | 0.53 |
ASDAS CRP vs ASDAS CRP imputed for BASDAI item 2 | 0.8 | 0.75 to 0.85 | 0.17 | −0.25 | 0.59 |
ASDAS CRP vs ASDAS CRP imputed for BASDAI item 3 | 0.88 | 0.84 to 0.92 | −0.09 | −0.38 | 0.2 |
ASDAS CRP vs ASDAS CRP imputed for BASDAI item 6 | 0.83 | 0.78 to 0.88 | −0.02 | −0.02 | 0.26 |
ASDAS ESR vs ASDAS ESR imputed for three BASDAI items | 0.88 | 0.84 to 0.92 | −0.02 | −0.47 | 0.43 |
ASDAS ESR vs ASDAS ESR imputed for BASDAI item 2 | 0.89 | 0.85 to 0.93 | 0.12 | −0.16 | 0.4 |
ASDAS ESR vs ASDAS ESR imputed for BASDAI item 3 | 0.82 | 0.78 to 0.88 | −0.12 | −0.49 | 0.26 |
ASDAS ESR vs ASDAS ESR imputed for BASDAI item 6 | 0.88 | 0.84 to 0.93 | −0.02 | −0.34 | 0.31 |
↵* Mean difference and limits of agreement were calculated using Bland-Altman analysis.