Table 2.

Correlation between IL-9 expression and clinical characteristics

Clinicopathological characteristics	IL-9 expression in sera		P value
	Negative (%)	Positive (%)
Age (y)	57	55	0.776a
Sex			0.678b
Male	4 (50)	14 (63.6)
Female	4 (50)	8 (36.4)
Serum LDH level	279.2	506.3	0.945a
Serum β2 microglobulin level	1.8	2.35	0.202a
Serum albumin level	41.8	35.8	0.009a
IPI score
0	6 (75)	0	<0.001b
1	0	0
2	0	10 (62.5)
3	2 (25)	2 (12.5)
4	0	4 (25)

^a: Student’s t test t-test. ^b : Fisher’s exact test