Table 4.

Performance metrics using different data preparation strategies classified with COVIDNet-CXR4-A model.

Dataset	Accuracy	Sens normal	Sens pneumo	Sens covid	PPV normal	PPV pneumo	PPV covid
Data	0.913	0.96	0.89	0.89	0.857	0.937	0.957
Lungs_isolated	0.903	0.95	0.85	0.91	0.848	0.966	0.91
Lungs_removed	0.913	0.95	0.85	0.94	0.856	0.924	0.969
Lungs_framed	0.897	0.91	0.89	0.89	0.858	0.899	0.937
Lungs_boxed_out	0.863	0.84	0.83	0.92	0.832	0.83	0.929

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