TABLE 1.

Characteristics of Included Patients

Characteristic	Events	Nonevents
Age
Median (y)	64 (IQR, 61–71)	68 (IQR, 63–74)
≤60 y	11	11
>60 y	39	39
Sex
Male	28	26
Female	22	24
Ann Arbor stage
2	3	6
3	9	13
4	38	31
Lactate dehydrogenase
Normal	8	19
>normal	42	31
Extranodal localizations
≤1	21	28
>1	29	22
Performance status
0	16	29
1	25	13
2	9	8
International prognostic index
Low	3	5
Low-intermediate	2	14
High-intermediate	25	18
High	20	13

IQR = interquartile range.