Table 3

Unweighted kappa (κ) coefficients of agreement for the first choice diagnosis for the six most frequently diagnosed conditions

Diagnostic categoryκ coefficient of first choice diagnosis
Idiopathic pulmonary fibrosis0.50
Non-specific interstitial pneumonia0.38
Sarcoidosis0.62
Extrinsic allergic alveolitis0.59
Cryptogenic organising pneumonia0.37
Smoking related interstitial lung disease0.30