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Table 6 Number of patients assigned to each category in both classifications according to presence or absence of symptoms as well as the confirmed RT-PCR

From: Comparison of the RSNA chest CT classification system and CO-RADS system in reporting COVID-19 pneumonia in symptomatic and asymptomatic patients

  Symptomatic patients P-value Asymptomatic patients P-value
  PCR + ve PCR − ve PCR + ve PCR − ve
RSNA reporting system
Typical 60 5 0.000 (HS) 6 2 0.95 (NS)
Indeterminate 12 7 11 19
Atypical 11 20 7 15
Negative 10 10 19 37
Total 93 42   43 73 251
  135   116 251
CO-RADS reporting system
CO-RADS 1 11 9 0.000 (HS) 21 39 0.96 (NS)
CO-RADS 2 10 20 5 14
CO-RADS 3 9 6 10 17
CO-RADS 4 16 3 3 2
CO-RADS 5 47 4 4 1
Total 93 42   43 73 251
  135   116 251
  1. Data are expressed in number. The probability of error (P-value) at 0.05 was considered significant (S), 0.01 and 0.001 are highly significant (HS), while > 0.05 are considered non-significant (NS)