Table 3. The area under the ROC curve analysis of the sLC ratio single indicator and combined with other indicators.

Clinical indicators	AUC	Standard error	95% confidence interval (AUC)	Sensitivity (%)	Specificity (%)	P 1	P 2
sLC ratio	0.875	0.034	0.832~0.910	81.16	84.87	<0.0001*
sLC ratio+β 2 -MG	0.949	0.016	0.918~0.871	92.75	86.75	<0.0001*	0.0054*
sLC ratio+LDH	0.889	0.030	0.848~0.922	81.16	93.59	<0.0001*	0.2978
sLC ratio+Ig	0.870	0.035	0.827~0.906	81.16	94.44	<0.0001*	0.2305
sLC ratio+β 2 -MG+LDH	0.950	0.161	0.918~0.971	94.20	85.47	<0.0001*	0.0056*
sLC ratio+β 2 -MG+Ig	0.952	0.015	0.922~0.973	94.20	86.75	<0.0001*	0.004*
sLC ratio+LDH+Ig	0.887	0.031	0.846~0.920	81.16	93.59	<0.0001*	0.3646
sLC ratio+β 2 -MG+LDH+Ig	0.952	0.015	0.922~0.973	94.20	85.47	<0.0001*	0.0043*

* represents P<0.05, the difference is statistically significant. P₁ is the statistical significance of the area under the ROC curve of each indicator. P₂ is the statistical significance of the difference between sLC ratio and combined indicators in the context of the area under the ROC curve.