Table 6

Authors	Scoring method	Readers	HRCT feature assessed	Inter-observer agreement (kappa)
Desai et al. [6]	Wells 1997	Chest radiologists	Overall grade	K = 0.74
Desai et al. [6]	Wells 1997	Chest radiologists	Coarseness of fibrosis	K = 0.88
Goh et al. [35]	Wells 1997	Clinicians	Disease extent	K = 0.64
Goh et al. [35]	Wells 1997	Trainees	Disease extent	K = 0.41
Camiciottoli et al. [20]	Warrick 1991	Radiologists	Disease extent	K = 0.69
Goldin et al. [27]	SLS	Chest radiologists	Presence or absence of ground-glass	K = 0.72
			Presence or absence of fibrosis	K = 0.61
			Presence or absence of honeycombing	K = 0.39
Goldin et al. [39]	SLS	Chest radiologists	Change over time in ground-glass	K = 0.36
			Change over time in fibrosis	K = 0.51
			Change over time in honeycombing	K = 0.16

Table 6: Inter-observer agreement.