The Antimicrobial Peptide LL-37 as a Predictor Biomarker for Periodontitis with the Presence and Absence of Smoking: A Case-Control Study

Table 2

Sensitivity and specificity with the cut-off point of salivary LL-37.

LL-37	AUC	value	Confidence interval	Cut-off point (ng/ml)
NSH vs. NSP	0.939	0.001	0.875 to 0.989	49.0
NSH vs. SP	0.822	0.001	0.729 to 0.915	40.5
NSH vs. periodontitis (NSP+SP)	0.876	0.001	0.808 to 0.944	47.5

AUC: area under the curve; NSH: nonsmoker healthy; NSP: nonsmoker periodontitis; SP: smoker periodontitis.