Efficacy of chest X-ray in the diagnosis of COVID-19 pneumonia: comparison with computed tomography through a simplified scoring system designed for triage

Egyptian Journal of Radiology and Nuclear Medicine

Table 3 Zonal and total CTSs and XRSs; sum of values, medians, correlation coefficients (rs) (n = 113)

Lung zone	RLZ	RMZ	RUZ	LLZ	LMZ	LUZ	Total	Median	p value
CTS	180	176	120	159	151	102	888	6	–
XRS	124	91	39	100	66	29	449	2	–
Correlations (rs)*	0.56	0.47	0.44	0.45	0.47	0.46	0.70	–	p < 0.001

*Spearman correlation coefficient (rs); 0.3–0.5 low, 0.5–0.7 moderate, 0.7–0.9 high correlation. p < 0.05 shows statistical significance. CTS computed tomography score, LLZ left lower zone, LMZ left middle zone, LUZ left upper zone, RLZ right lower zone, RMZ right middle zone, RUZ right upper zone, XRS X-ray score