Table 2. Univariate and multivariate analyses for factors related to oversurvival using the COX proportional hazard model.

Characteristics		Univariate analysis		Multivariate analysis
		HR (95% CI)	P-value	HR (95% CI)	P-value
Age	<45 compared with ≥45	0.747 (0.422–1.324)	0.318	N.A.
Gender	female compared with male	0.908 (0.521–1.583)	0.735	N.A.
Tumor size	≥5 cm compared with <5 cm	0.825 (0.472–1.444)	0.502	N.A.
PTBE	≥1 cm compared with <1 cm	1.030 (0.591–1.795)	0.917	N.A.
WHO stage	I + II compared with III + IV	0.428 (0.242–0.756)	0.004	0.571 (0.306–1.067)	0.079
XIST expression	high compared with low	2.560 (1.438–4.557)	0.001	2.037 (1.083–3.831)	0.027

N.A., not applicable.