Table 4.

ROC curve analysis of expression quantity of IL-1α, TGF-β1, and TNF-α and ligamentum flavum thickness in differentiating mild to moderate LSS.

	AUC	P value	Cut-off value	95% CI
Ligamentum flavum thickness	0.986	<0.001	4.67	0.968-1.000
IL-1α expression quantity	0.825	<0.001	89.18	0.729-0.921
TGF-β1expression quantity	0.765	<0.001	73.93	0.646-0.884
TNF-α expression quantity	0.976	<0.001	42.14	0.947-1.000