Table 5.
Intra-rater and inter-rater reliability and measurement error estimates of the SFInX
| Bland-Altman analysis | |||||
|---|---|---|---|---|---|
| Reliability | ICC2,1 (95 % CI) | SEM | MDC95 | Mean difference (95 % CI) | Limits of Agreement |
| Intra-rater | 0.96 (0.94 to 0.97) | 3.9 | 10.8 | 0.1 (−1.2 to 1.3) | −10.6 to 10.8 |
| Inter-rater | 0.91 (0.63 to 0.97) | 5.8 | 16.1 | 5.1 (2.1 to 8.0) | −7.3 to 17.4 |
| Kappa | % | ||||
| Inter-rater item agreement | 0.42 to 1.00 | 40-100 % | |||
| Dichotomous items (n = 5) | 0.62 to 1.00 | 90-100 % | |||
| Polytomous items (n = 8) | 0.42 to 0.92 | 40-95 % | |||
ICC Intra-class correlation coefficient, CI Confidence Interval, MDC Minimal Detectable Change, SEM Standard Error of Measurement