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

Egyptian Journal of Radiology and Nuclear Medicine

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

	Symptomatic patients		P-value	Asymptomatic patients		P-value
	PCR + ve	PCR − ve	P-value	PCR + ve	PCR − ve	P-value
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

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)