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Table 1 Clinical characteristics of the training and validation cohorts

From: CT radiomic features for predicting resectability of oesophageal squamous cell carcinoma as given by feature analysis: a case control study

  The training cohort The validation cohort
Resectable
(n = 189)
Unresectable
(n = 224)
Resectable
(n = 81)
Unresectable
(n = 97)
Median age (years) 52.8 65.8 58.8 62.6
Gender (%)
 Male 143 (75.6) 147 (65.6) 61 (75.3) 70 (72.1)
 Female 46 (24.4) 77 (34.4) 20 (24.7) 27 (27.9)
Location of the tumour (%)
 Upper thoracic segment 14 (7.6) 13 (5.6) 4 (4.9) 5 (5.2)
 Middle thoracic segment 135 (71.2) 155 (69.2) 60 (74.5) 50 (51.2)
 Lower thoracic segment 40 (21.2) 56 (25.2) 17 (20.6) 42 (43.6)
Cigarette Smoking (%)
 Yes 115 (60.8) 154 (68.8) 59 (72.8) 66 (68.0)
 No 74 (39.2) 70 (31.2) 22 (27.2) 31 (32.0)
History of alcohol use (%)
 Yes 94 (49.7) 134 (59.8) 51 (63.0) 63 (65.0)
 No 95 (50.3) 90 (40.1) 30 (37.0) 34 (35.0)
Family History (%)
 Yes 85 (45.0) 150 (67.0) 35 (43.2) 58 (59.8)
 No 104 (55.0) 74 (33.0) 46 (56.7) 39 (40.2)