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

Figure 3

ROC curve for salivary LL-37. (a) NSH vs. NSP; (b) NSH vs. SP; (c) NSH vs. periodontitis (NSP+SP). NSH: nonsmoker healthy; NSP: nonsmoker periodontitis; SP: smoker periodontitis.

(a)

(b)

(c)