Fig. 3
From: Diagnostic accuracy of lung ultrasound for SARS-CoV-2: a retrospective cohort study
Grey zone analysis for Lung Ultrasound Score for all examinations (top left), examinations with all 12 views (top right), examinations with 12 views including pleural effusions as a negative prognostic factor for SARS-CoV-2 diagnosis (bottom left), and excluding confounding pre-existing comorbidities (bottom right)