Application of Lactoferrin and α1-Antitrypsin in Gingival Retention Fluid to Diagnosis of Periodontal Disease

Table 2

Correlation of lactoferrin in GRF or saliva with variables.

Variable	GRF	Saliva
Age	−0.03 (0.84)	0.11 (0.38)
Male gender	0.20 (0.12)	0.11 (0.38)
Prevalence of PD ≥ 4 mm	0.29 (0.02)	0.43 (<0.01)
BOP	0.25 (0.047)	0.42 (<0.01)
Lactoferrin in saliva	0.43 (<0.01)	—
α1-antitrypsin in GRF	0.61 (<0.01)	0.39 (<0.01)
α1-antitrypsin in saliva	0.44 (<0.01)	0.69 (<0.01)

PD: probing pocket depth, BOP: bleeding on probing, GRF: gingival retention fluid. The data are presented as correlation coefficient r (-value) by simple correlation test (Pearson test). Significance level: , .