Table 3.

Improvement in Discrimination for Adverse Events After Adding IL-6, CD4⁺/CD8⁺ in Elderly Patients

	AUC (95% CI)	P	ΔChanges	P
The basic model	0.687(0.640–0.732)	<0.001		Reference
+CD4+/CD8+	0.719(0.673–0.762)	<0.001	0.032	0.024
+IL-6	0.755(0.710–0.796)	<0.001	0.068	0.001
+IL-6+CD4+/CD8+	0.787(0.744–0.825)	<0.001	0.1	<0.001

Notes: The basic model includes sex, smoking, course of disease, PCT, CRP, T3, T4 and D-dimer.

Abbreviations: PCT, procalcitonin; CRP, C-reactive protein; T3, triiodothyronine; T4, thyroxine.