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Table 1 General characteristics of the study patients

From: Development and validation of a prognostic model incorporating [18F]FDG PET/CT radiomics for patients with minor salivary gland carcinoma

Variable Entire cohort Training group Validation group P
n = 75 n = 45 (60.0%) n = 30 (40.0%)  
Age: median [range], years 52 [20-81] 53 [22-78] 51 [20-81] 0.240
Sex Female 40 (53.3) 25 (55.6) 15 (50.0) 0.646
Male 35 (46.7) 20 (44.4) 15 (50.0)  
Smoking Yes 21 (28.0) 12 (26.7) 9 (30.0) 0.797
No 54 (72.0) 33 (73.3) 21 (70.0)  
Performance ECOG 0 − 1 72 (96.0) 43 (95.6) 29 (96.7) 1.000
ECOG 2 3 (4.0) 2 (4.4) 1 (3.3)  
Treatment Surgery 45 (60.0) 30 (66.7) 15 (50.0) 0.160
Non-surgery 30 (40.0) 15 (33.3) 15 (50.0)  
WHO histology High-risk 60 (80.0) 38 (84.4) 22 (73.3) 0.255
Low-risk 15 (20.0) 7 (15.6) 8 (26.7)  
T-stage T1 − T2 31 (41.3) 16 (35.6) 15 (50.0) 0.239
T3 − T4 44 (58.7) 29 (64.4) 15 (50.0)  
N-stage N0 − N2b 71 (94.7) 42 (93.3) 29 (96.7) 0.646
N2c − N3 4 (5.3) 3 (6.7) 1 (3.7)  
AJCC stage I − II 23 (30.7) 12 (26.7) 11 (36.7) 0.445
III − IV 52 (69.3) 33 (73.3) 19 (63.3)  
Dead events   27 (36.0) 19 (42.2) 8 (26.7) 0.222
Relapse events   31 (41.3) 18 (40.0) 13 (43.3) 0.814