Table 5.

Multivariate analysis of overall survival of oral squamous cell carcinoma patients

	Category	HR (95% CI)	P-value
CLIC1 expression	Negative	5.354 (1.463–19.586)	0.011a
	Positive
Histological grade	Well differentiated	0.180 (0.038–0.859)	0.032a
	Moderately differentiated
	Poorly differentiated
TNM stage	0–I	1.680 (0.413–6.836)	0.469
	II–IV
Lymph-node metastasis	Negative	4.743 (1.607–14.001)	0.005a
	Positive
Tumor size (cm)	<3	1.197 (0.244–5.871)	0.825
	≥3

Note:

^aStatistically significant.