The Relationship between the Concentration of Salivary Tyrosine and Antioxidants in Patients with Oral Lichen Planus

Table 4

Relationship between the tested antioxidant parameters, i.e., GPx and uric acid (UA), GPx and Tyr, and between UA and Tyr. Significance level ; correlation coefficient ; a positive correlation direction means that the increase in GPx activity is accompanied by an increase in results of Tyr or UA. The higher the GPx activity on one variable (e.g., axis), the higher the UA result on the other variable ( axis). The strength of the relationship between the tested parameters is high.

Parameters	Correlation
	Coefficient ()		Direction	Strength
GPx and Tyr	0.824	NP	Positive	Strong
GPx and UA	0.826	NP	Positive	Strong
Tyr and UA	0.792	P	Positive	Strong

P—Pearson correlation (normal for both parameters); NP—Spearman rank correlation (nonnormal distribution of at least one parameter).