Deep-Learning-Based Survival Prediction of Patients in Coronary Care Units

Table 2

Selected variables by multivariable Cox regression analysis.

Multivariate analysis
Variables	HR	95% CI	value
Disease
Myocardial infarction	Reference
Heart failure	1.508	1.275-1.785	<0.001
Tachycardia	1.598	1.213-2.106	0.001
Respiratory failure	1.984	1.557-2.528	<0.001
Valve disorder	0.947	0.66-1.359	0.768
Race
White	Reference
Black	0.988	0.745-1.309	0.931
Asia	0.752	0.399-1.419	0.379
Hispanic	1.647	0.942-2.880	0.080
Others	0.531	0.314-0.897	0.018
Unknown	1.446	1.241-1.686	<0.001
Sex
Male	Reference
Female	1.019	0.897-1.156	0.777
Anion gap (mmol/L)
8~16	Reference
<8	1.356	1.018-1.807	0.038
>16	1.253	1.090-1.439	0.001
Glucose (g/dL)
70~140	Reference
<70	0.86	0.574-1.289	0.466
>140	1.173	1.031-1.333	0.015
White blood cell (X109/L)
4~10	Reference
<4	1.459	0.358-5.945	0.598
>10	1.454	1.246-1.696	<0.001
Neutrophil (%)
50~70	Reference
<50	0.639	0.395-1.034	0.068
>70	0.852	0.704-1.032	0.101
Potassium (mmol/L)
3.5~5.5	Reference
<3.5	22.994	7.262-72.808	<0.001
>5.5	1.215	1.048-1.410	0.01
Creatine kinase (U/L)
18~198	Reference
<18	2.255	1.246-4.079	0.007
>198	0.856	0.744-0.984	0.029
Blood urea nitrogen (mg/dL)
6~22	Reference
<6	1.066	0.393-2.892	0.899
>22	1.584	1.312-1.913	<0.001
Age	1.030	1.024-1.036	<0.001
APS-III	1.021	1.016-1.026	<0.001
SOFA	1.054	1.022-1.088	0.001