Table 3. Inter-observer variability of the primary readers on 2714 images.

End-point	Percent Agreement	Kappa
Consolidation	86.0	0.61
Other Infiltrate	84.4	0.19
Pleural effusion	96.5	0.43
RCP*	89.1	0.68

*RCP is defined as images with consolidation or pleural fluid or both