Table 3.

Radiomic features associated with deterioration-free survival of COVID-19 patients

Radiomic Feature	Risk	Deterioration	Mean Survival Time in Days	Hazard Ratio	p
(value range)	Group	Events	(95% confidence interval)	(95% confidence interval)
$f174$ square_glszm_SizeZoneNonUniformity	Higher	12	4.8 (3.5 to 6.2)	3.198 (1.145 to 8.932)	0.0265
(3.750 to 11.423)	Lower	7	12.1 (6.3 to 17.8)	-
$f340$ wavelet-HL_glrlm_LongRunEmphasis	Higher	12	5.0 (3.3 to 6.6)	3.049 (1.133 to 8.206)	0.0273
(1.428E+15 to 2.214E + 16)	Lower	7	12.5 (6.8 to 18.1)	-
$f294$ wavelet-HL_firstorder_Skewness	Higher	12	5.1 (3.3 to 6.9)	2.823 (1.056 to 7.547)	0.0386
(-1.423 to 0.097)	Lower	7	12.0 (6.6 to 17.5)	-
$f143$ square_gldm_LargeDependenceEmphasis	Higher	10	4.5 (3.5 to 5.4)	3.1443 (1.047 to 9.439)	0.0411
(7.804E+14 to 8.066E+15)	Lower	9	11.2 (6.2 to 16.2)	-
$f344$ wavelet-HL_glrlm_RunEntropy	Higher	11	5.3 (3.5 to 7.1)	2.770 (1.012 to 7.582)	0.0473
(7.422E+14 to 3.776E+16)	Lower	8	12.5 (7.2 to 17.9)	-