Table 2.

Clinical prediction model performance for diagnosis of HP

	CV-C	GOF
Model 1 (clinical and individual radiological features)
Age, down, birds, diffuse craniocaudal GGO, mosaic perfusion	77.8	0.60
Age, down, any GGO, diffuse craniocaudal GGO, mosaic perfusion, air trapping	78.0	0.47
Age, down, birds, diffuse GGO in axial distribution, diffuse craniocaudal GGO, mosaic perfusion	77.9	0.78
Model 2 (clinical features and radiologist’s diagnostic impression)
Age, down, birds, moderate/high confidence HP	75.8	0.72
Age, down, birds, sex, moderate/high confidence HP	75.6	0.27
Age, down, sex, moderate/high confidence HP	75.2	0.57

CV-C, cross-validated C-statistic; GGO, ground-glass opacity; GOF, Hosmer-Lemeshow goodness of fit p value; HP, chronic hypersensitivity pneumonitis.