Multicenter retrospective analysis of 581 patients with primary intestinal non-hodgkin lymphoma from the Consortium for Improving Survival of Lymphoma (CISL)

Table 6 Multivariate analysis of prognostic factors

Characteristics	P value	Hazard ratio	95% Confidence Interval
			Lower limit	Upper limit
Age > 60	< 0.001	1.945	1.379	2.743
Performance status ≥ 2	< 0.001	2.072	1.384	3.101
Elevated serum LDH	0.002	1.776	1.233	2.558
Extranodal involvement ≥ 2	0.579	0.892	0.596	1.335
Lugano stage IV	0.001	1.248	1.090	1.429
Multiple intestinal involvement	0.357	1.076	0.920	1.259
Immunophenotype T-cell	< 0.001	3.645	2.454	5.416
B symptoms	0.028	1.530	1.046	2.237
Surgical resection not done	0.281	1.235	0.842	1.811

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