Table 2 Characteristics of the study participants with follicular lymphoma in the Scandinavian Lymphoma Etiology (SCALE) study (Denmark/Sweden) and in the University of California San Francisco (UCSF) study

Number of participants

373

231 (62)

142 (38)

213

Sex (men)

185 (50)

111 (48)

74 (52)

110 (52)

Age (years)

18-34

9 (2)

6 (3)

2 (1)

3 (1)

35-44

30 (8)

15 (6)

13 (9)

15 (7)

45-54

105 (27)

58 (25)

43 (30)

50 (23)

55-64

139 (36)

83 (36)

53 (37)

73 (34)

65-75

100 (26)

69 (30)

31 (22)

42 (20)

76-84

-

-

-

30 (14)

Median (range)

57 (22-74)

58 (22-74)

56 (33-72)

60 (29-84)

Participant born in Sweden or Denmark (yes)

342 (92)

203 (88)

139 (98)

-

Parents born in Sweden or Denmark (yes)

331 (89)

193 (84)

138 (97)

-

Participants of European ancestry ^B

-

-

-

213 (100)

Ann Arbor stage

I

77 (22)

50 (23)

27 (19)

-

II

48 (13)

32 (15)

16 (12)

-

III

100 (28)

69 (32)

31 (22)

-

IV

133 (37)

68 (31)

65 (47)

-

Missing

15

13

2

-

FLIPI ^A

Low risk

136 (36)

107 (46)

29 (20)

-

Intermediate risk

152 (41)

68 (29)

84 (59)

-

High risk

85 (23)

56 (24)

29 (20)

-

Progression (yes)

-

155 (67)

-

-

Missing

-

2 (1)

-

-

Transformation (yes)

-

56 (26)

-

-

Missing

-

12 (5)

-

-

Rituximab first line/any treatment line (yes)

-

24 (10)/106 (47)

-

-

Missing

-

5 (2)

-

-

Died

137 (37)

88 (38)

49 (35)

56 (26)

Died due to lymphoma

88 (24)

54 (23)

34 (24)

24 (11)