Prognostic significance of chest CT severity score in mortality prediction of COVID-19 patients, a machine learning study

Zakariaee, Seyed Salman; Abdi, Aza Ismail; Naderi, Negar; Babashahi, Mashallah

doi:10.1186/s43055-023-01022-z

Egyptian Journal of Radiology and Nuclear Medicine

Table 1 The most important variable at P < 0.01 using the Chi-squared test

From: Prognostic significance of chest CT severity score in mortality prediction of COVID-19 patients, a machine learning study

No	Features name	Variable type	Frequency or mean ± SD	Χ²	P value	No	Features name	Variable type	Frequency or mean ± SD	Χ²	P value
1	Age	Numeric	57.22 ± 16.76	29.520	< 0.001	15	Absolute lymphocyte count	Numeric	2.21 ± 1.17	56.562	< 0.001
2	Sex	Nominal	Female(368) Male(447)	9.397	0.002	16	Absolute neutrophil count	Numeric	7.37 ± 1.73	10.290	0.006
3	Cough	Nominal	Haven’t (209) Have (606)	23.077	< 0.001	17	Calcium	Numeric	9.52 ± 0.80	14.471	0.001
4	Underlying disease	Nominal	Haven’t (328) Have (487)	20.450	< 0.001	18	Phosphor	Numeric	3.48 ± 0.48	11.612	0.003
5	Heart disease	Nominal	Haven’t (648) Have (167)	20.921	< 0.001	19	Blood urea nitrogen	Numeric	39.69 ± 25.56	18.258	< 0.001
6	Hypertension	Nominal	Haven’t (571) Have (244)	8.164	0.004	20	Total bilirubin	Numeric	0.62 ± 0.50	21.537	< 0.001
7	Diabetes	Nominal	Haven’t (634) Have (181)	7.496	0.006	21	Serum albumin	Numeric	4.09 ± 0.46	15.818	< 0.001
8	Neurological disease	Nominal	Haven’t (776) Have (39)	7.968	0.005	22	Glucose	Numeric	137.45 ± 83.50	15.005	0.001
9	Cancer	Nominal	Haven’t (791) Have (24)	17.369	< 0.001	23	Creatinine kinase	Numeric	137.68 ± 234.68	27.031	< 0.001
10	Serum creatinine	Numeric	1.21 ± 0.56	55.795	< 0.001	24	Activated partial thromboplastic time	Numeric	28.26 ± 12.54	17.172	< 0.001
11	RBC	Numeric	4.58 ± 0.74	18.665	< 0.001	25	Prothrombin time	Numeric	12.76 ± 2.38	30.123	< 0.001
12	WBC	Numeric	7719.02 ± 3939.55	72.375	< 0.001	26	Hypersensitive troponin	Nominal	Normal (791) Abnormal (24)	22.836	< 0.001
13	Hematocrit	Numeric	39.61 ± 6.67	19.847	< 0.001	27	CTSS	Numeric	11.18 ± 5.28	71.482	< 0.001
14	Hemoglobin	Numeric	13.44 ± 2.15	23.882	< 0.001

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