Table 3.

Performance metrics using different data preparation strategies classified with COVIDNet-CXR3-A model: sens and pneumo stand for sensitivity and pneumonia, respectively.

Dataset	Accuracy	Sens normal	Sens pneumo	Sens covid	PPV normal	PPV pneumo	PPV covid
Data	0.91	0.95	0.91	0.87	0.896	0.867	0.978
Lungs_isolated	0.89	0.94	0.82	0.91	0.803	0.943	0.948
Lungs_removed	0.903	0.96	0.81	0.94	0.842	0.931	0.949
Lungs_framed	0.917	0.92	0.92	0.91	0.868	0.929	0.958
Lungs_boxed_out	0.847	0.84	0.82	0.88	0.8	0.812	0.936

Bold values correspond to best performance metric for dataset in the same row.