Table 2.

Association between PAR-1, MMP-1, MVD expression, and POI in patients with oral squamous cell carcinoma using Spearman’s correlation analysis (n=74)

	MMP-1		PAR-1		MVD
	R	P-value	R	P-value	R	P-value
POI	0.273	0.019	0.233	0.045	0.271	0.019

Notes: R represents the coefficient of correlation. Correlation was considered statistically significant at P<0.05.

Abbreviations: MMP-1, matrix metalloproteinase-1; PAR-1, protease-activated receptor-1; MVD, microvessel density; POI, patterns of invasion.