Overexpression of proteasomal activator PA28α serves as a prognostic factor in oral squamous cell carcinoma

Table 2 Multivariate Cox Regression analysis on factors for OSCC recurrence

Variables	β	SE	Wald χ ²	P Value	RR (95 % CI)
Alpha (2 vs.1)	0.801	0.351	5.220	0.022	2.229 (1.121-4.432)
Differentiation (3 vs. 1)	1.204	0.382	9.932	0.002	3.335 (1.577-7.053)
Lymphatic metastasis	1.266	0.539	5.522	0.019	3.547 (1.234-10.200)

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