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Table 2 Inter-agreement kappa statistics for observers using the TT/3R method

From: Comparison between tracheal ratio methods used by three observers at three occasions in English Bulldogs

Observer

Occasion 1

Occasion 2

Occasion 3

 

κ

PO

PA

NA

κ

PO

PA

NA

κ

PO

PA

NA

A vs. B

0.13/0.17

0.48/0.54

0.36/0.32

0.57/0.65

0.07/0.08

0.36/0.41

0.22/0.20

0.45/0.54

0.06/0.10

0.34/0.41

0.21/0.27

0.43/0.51

B vs. C

0.38/0.21

0.84/0.89

0.47/0.25

0.91/0.94

0.26/0.56

0.86/0.93

0.33/0.60

0.92/0.96

0.57/0.39

0.89/0.88

0.63/0.46

0.94/0.93

A vs. C

0.11/0.05

0.46/0.46

0.32/0.12

0.56/0.62

0.10/0.12

0.39/0.45

0.29/0.28

0.47/0.55

0.15/0.12

0.45/0.43

0.42/0.30

0.47/0.52

  1. Inter-agreement for the TT/R3 method (with ratio <2 as definition of tracheal hypoplasia) for the different measurement occasions. Kappa (κ), observed agreement (PO), positive agreement (PA) and negative agreement (NA) values are presented for both right and left lateral recumbent radiographs (RLR/LLR). In total 56 RLR and 56 LLR radiographs.