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Table 1 Baseline characteristics

From: Prognostic implications of PD-L1 expression in patients with soft tissue sarcoma

Variables   PD-L1 expression P value
N (%) - +
Sex Male 50 (61 %) 31 (66 %) 19 (54 %) 0.284
Female 32 (39 %) 16 (34 %) 16 (46 %)  
Age (year, median, range) 26 (1–78) 26.3 ± 19.7 30.6 ± 20.0 0.773
Tumor size (cm, median, range) 5.0 (1.5–12.0) 5.0 ± 1.8 5.3 ± 1.7 0.711
Histologic type Rhabdomyosarcoma 32 (39 %) 20 (43 %) 12 (34 %) 0.004
Synovial sarcoma 19 (23 %) 9 (19 %) 10 (29 %)  
Ewing sarcoma 18 (22 %) 12 (26 %) 6 (17 %)  
Epithelioid sarcoma 7 (9 %) 0 (0 %) 7 (20 %)  
Mesenchymal chondronsarcoma 6 (7 %) 6 (13 %) 0 (0 %)  
Tumor location Trunk 13 (16 %) 9 (19 %) 4 (11 %) 0.073
Abdomen/pelvis 20 (24 %) 14 (30 %) 6 (17 %)  
Head/Neck 22 (27 %) 14 (30 %) 8 (23 %)  
Extremities 27 (33 %) 10 (21 %) 17 (49 %)  
FNCLCC Grade 1 17 (21 %) 11 (23 %) 6 (17 %) 0.242
2 34 (41 %) 19 (40 %) 15 (43 %)  
3 31 (38 %) 17 (36 %) 14 (40 %)  
Initial distant metastasis No 67 (82 %) 38 (81 %) 29 (83 %) 0.816
Yes 15 (18 %) 9 (19 %) 6 (17 %)  
Surgery No 6 (7 %) 2 (4 %) 4 (11 %) 0.217
Yes 76 (93 %) 45 (96 %) 31 (89 %)  
Resection margin Negative 59 (72 %) 29 (62 %) 30 (86 %) 0.017
Positive 23 (28 %) 18 (38 %) 5 (14 %)  
Chemotherapy No 35 (43 %) 21 (45 %) 14 (40 %) 0.672
Yes 47 (57 %) 26 (55 %) 21 (60 %)  
Radiotherapy No 45 (55 %) 26 (55 %) 19 (54 %) 0.926
Yes 37 (45 %) 21 (45 %) 16 (46 %)