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Table 2 Level of certainty for COVID-19 based on CT findings using in-house radiology classification

From: SARS-CoV-2 serology increases diagnostic accuracy in CT-suspected, PCR-negative COVID-19 patients during pandemic

Level of certainty for COVID-19 COVID-19 CT classification Group A
(n = 107)
abs. no (%)
Group B
(n = 46)
abs. no (%)
Low No signs of COVID-19 CT features (category 0) 4 (4)
Low Infiltration or consolidation not typical for COVID-19 (category 1) 4 (2)
Low Early stage of COVID-19 infection possible (category 2) 17 (18) 30 (14)
High Typical CT features compatible with early COVID-19 (category 3) 23 (25) 20 (9)
High Typical CT features compatible with advanced COVID-19 (category 4) 56 (60) 46 (21)