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

Table 3

Correlation of α1-antitrypsin in GRF or in saliva with variables.

Variable	GRF	Saliva
Age	0.16 (0.22)	0.04 (0.73)
Male gender	0.12 (0.36)	−0.03 (0.80)
Prevalence of PD ≥ 4 mm	0.36 (<0.01)	0.46 (<0.01)
BOP	0.42 (<0.01)	0.50 (<0.01)
α1-antitrypsin in saliva	0.53 (<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: , .