Table 3.

Multivariate analyses of clinicopathologic factors for disease-free survival and overall survival of subjects with gingival cancer

Factor	χ2	Relative risk	P
DFS
PBX2 expression
Level 1 vs. level 2	5.22	1.93	<0.05
T(pTNM)
pT1–3 vs. pT4	4.37	1.78	<0.05
Lymph node metastasis
Absent vs. present	9.00	2.15	<0.05
VCP expression
Level 1 vs. level 2	1.60	1.58	NS
Stage
1+2 vs. 3+4	0.38	1.27	NS
OS
PBX2 expression
Level 1 vs. level 2	5.35	3781.80	<0.05
T(pTNM)
pT1–3 vs. pT4	0.31	1.35	NS
VCP expression
Level 1 vs. level 2	2.93	3082.10	NS
Histologic differentiation
Well vs. moderately+poorly	4.89	2.79	<0.05
Stage
1+2 vs. 3+4	1.15	1713.50	NS

DFS: disease-free survival; OS: overall survival; pTNM: pathologic tumor-node-metastasis; PBX2: pre-B-cell leukemia transcription factor 2; VCP: valosin-containing protein; NS: not significant