Analysis of histopathological and clinical prognostic factors in lymphomas involving the gastrointestinal system

Table 2 Risk factors associated with overall survival and event-free survival in Primary gastrointestinal lymphoma

Clinical characteristic	Case (n)	OS (%)		EFS (%)
		Univariate analysis 1-year/3-year/ 5-year, P value	Multivariate analysis, P value	P value
Age (years)		0.529	-	0.546
< 60	28	64.3/56/56
≥ 60	34	70.4/49.4/49.4
Gender		0.853	-	0.842
Female	27	54.7/50.2/50.2
Male	35	77.1/61.7/54.5
Cell Fenotype		0.900	-	0.403
B-Cell	60	68.1/56.7/52.2
T-Cell	2	50/50/50
LDH level		0.029	0.085	0.090
< 270	44	77.1/69.3/62.7
≥ 270	18	44.4/27.8/27.8
Surgical treatment		0.002	0.384	0.013
Surgical treatment (-)	52	74.8/63.7/58.6
Surgical treatment (+)	10	30/20/20
Stage group		0.553	-	0.909
I-II	57	68.2/58.1/53.5
IV	5	60/40/40
Performance score		< 0.0001	0.010	0.002
0-1	55	74.4/63.9/59
≥ 2	7	14.3/0/0
IPI score		0.095	-	0.024
0-2	55	68.9/58.4/53.5
≥ 3	5	40/20/20

OS: Overall survival; EFS: Event-free survival; LDH: Lactate dehydrogenase; IPI: International Prognostic Index.