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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