Table 6.

Univariate analysis of OS in PI-DLBCL patients with COX proportional hazards.

Index	P value	HR	95%CI
			lower limit	upper limit
Age	0.514	0.787	0.384	1.614
Gender	0.340	0.674	0.300	1.515
ECOG score	0.028	2.316	1.097	4.888
Lugano stage	0.004	4.115	1.567	10.808
B symptoms	0.042	0.471	0.228	0.972
Hans pathological classification	0.802	0.911	0.439	1.892
IPI score	0.017	2.587	1.182	5.662
WBC	0.051	2.183	0.998	4.774
Serum LDH	0.007	2.697	1.315	5.534
Albumin	0.003	2.941	1.432	6.038
β2 microglobulin	0.001	3.379	1.635	6.986
Ki-67	0.191	0.526	0.201	1.376
Lymphoma site	0.272	0.448	0.107	1.880
First-line treatment	0.186	1.629	0.790	3.357