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Table 3 Clinicopathological characteristic of the patients in external test set

From: Predicting postoperative complications of head and neck squamous cell carcinoma in elderly patients using random forest algorithm model

Characteristic

No.(%) of patients

 Gender

 Total: 12

 Male

 8(66.7 %)

 Female

 4(33.3 %)

Primary/recurrence

Total: 12

 Primary

 10(83.3 %)

 Recurrence

 2(16.7 %)

 Co-morbidities

 Total: 12

 High blood pressure

 3(25.0 %)

 Myocardial infarction

 5(41.7 %)

 Diabetes

 4(33.3 %)

Pathological grading

Total: 12

 I

 6(50.0 %)

 II

 4(33.3 %)

 III

 2(16.7 %)

 Unidentified

 0(0 %)

Clinical grading

Total: 12

 T1

 6(50.5 %)

 T2

 5(41.7 %)

 T3

 1(8.3 %)

 T4

 0(0 %)

Region

Total: 12

 Floor of mouth

 4(33.3 %)

 Tongue

 3(25.0 %)

 Oral-pharyngeal

 1(8.3 %)

 Neck

 1(8.3 %)

 Mandible

 1(8.3 %)

 Parotid gland

 2(16.7 %)

Surgical classification

Total: 12

 IO

 6(50.0 %)

 JO

 2(16.7 %)

 SMO

 4(33.3 %)

Postoperative complications

Total: 6

 Wound infection

 3(25.0 %)

 Partial flap necrosis

 1(8.3 %)

 Total flap necrosis

 1(8.3 %)

 Pulmonary embolus

 1(8.3 %)