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Table 5 Intra-rater and inter-rater reliability and measurement error estimates of the SFInX

From: The Shoulder Function Index (SFInX): evaluation of its measurement properties in people recovering from a proximal humeral fracture

     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 %   
  1. ICC Intra-class correlation coefficient, CI Confidence Interval, MDC Minimal Detectable Change, SEM Standard Error of Measurement