Table 8. ROC curve of early specific indicators in glucocorticoid use in SMPP.

Indicators	ROC curve area	Standard error	P value	95% CI		Cut-off value
				Lower limit	Upper limit
IL-18	0.581	0.117	0.494	0.352	0.910	218.19
IFN-γ	0.566	0.135	0.549	0.301	0.831	11.24

ROC, receiver operating characteristic; SMPP, severe Mycoplasma pneumoniae pneumonia; IL, interleukin; IFN-γ, interferon-γ.