Table 1.

Patients' characteristics.

No. of patients (n)	284
Median age, range(y/o)	67(20–91)
40≧(%)	5
>40 to ≦60(%)	23
>60 to ≦75(%)	49
>75 (%)	23
Male sex (%)	61
IPI/aaIPI (%)
Low	37
Low-intermediate	16
High-intermediate	19
High	28
NCCN-IPI (%)
Low	11
Low-intermediate	36
High-intermediate	47
High	6
Stage(%)
Ⅰ	23
Ⅱ	14
Ⅲ	19
Ⅳ	44
Elevated LDH level (%)	48
Extranodal disease >1 (%)	40
upfront ASCT(%)	9

LDH: lactate dehydrogenase

ASCT: autologous hematopoietic stem cell transplantation