Table 6 Intra-observer kappa values with upper and lower confidence interval (CI) for proximal humerus fractures, calculated with or without taking “related” fractures into account (intermediate groups)
From: Validity of humerus fracture classification in the Swedish fracture register
Without intermediate groups | With intermediate groups | |||
|---|---|---|---|---|
Mean kappa value | 95% CI | Mean kappa value | 95% CI | |
Rater 1 | 0.752 | 0.652 – 0.853 | 0.974 | 0.939 – 1.000 |
Rater 2 | 0.599 | 0.481 – 0.717 | 0.910 | 0.846 – 0.974 |
Rater 3 | 0.593 | 0.478 – 0.707 | 0.914 | 0.853 – 0.975 |