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. 2021 Nov 22;2021:6347404. doi: 10.1155/2021/6347404

Table 2.

Characteristics of the training and validation cohorts.

Total (n = 65) Training (n = 49) Validation (n = 16) p
Sex 0.596
 Male 45 (69.2%) 34 (69.4%) 11 (68.8%)
 Female 20 (30.8%) 15 (30.6%) 5 (31.3%)

Age, median (range) 29.0 (8–72) 29 (8–72) 30 (16–54) 0.703

Ann Arbor stage 0.585
 I-II 36 (55.4%) 27 (55.1%) 9 (56.3%)
 III-IV 29 (44.6%) 22 (44.9%) 7 (43.8%)

Bulky disease 0.678
 >10 cm 9 (13.8%) 6 (12.2%) 3 (18.8%)
 <10 cm 56 (86.2%) 43 (87.8%) 13 (81.3%)

BM 0.612
 Yes 9 (13.8%) 7 (14.3%) 2 (12.5%)
 No 56 (86.2%) 42 (85.7%) 14 (87.5%)

Extranodal sites 0.495
 Yes 25 (38.5%) 20 (40.8%) 5 (31.3%)
 No 40 (61.5%) 29 (59.2%) 11 (68.8%)

B symptoms 0.389
 Yes 22 (33.8%) 18 (36.7%) 4 (25.0%)
 No 43 (66.2%) 31 (63.3%) 12 (75.0%)

Chemotherapy with IFRT 0.565
 Yes 4 (6.2%) 4 (8.2%) 0 (0.0%)
 No 61 (93.8%) 45 (91.8%) 16 (100.0%)

LDH, lactate dehydrogenase, BM, bone marrow; IFRT, involved-field radiation therapy.