Table 1 Demographics and clinical characteristics of the study population

Sex

 Female/male

30/54

Age

 ≤ 60 years/> 60 years

43/41

LDH

 Normal/higher than normal

38/46

B symptoms

 No/yes

33/51

ECOG performance status

 0–1/> 1

57/27

Ann arbor stage

 I–II/III–IV

15/69

Extranodal sites ≥ 2

 No/yes

65/19

BMB

 Negative/positive

63/21

Ki-67 ≥ 80%

 No/yes

60/24

Platelet cell count ≥ 150 × 10⁹/L

 No/yes

48/36

IPI

 0–2/3–5

47/37

PIT

 0–1/2–4

41/43

IPTCLP

 0–1/2, 3

54/30