Table 1 Clinical characteristic of the study patients.

From: Machine learning approaches overcome imbalanced clinical data for intraoral free flap monitoring

Characteristics

Patients (N=131)

Age (mean)

58.1

Sex

 

   Male

81 (61.8%)

   Female

50 (38.2%)

Primary site

 

   Tongue

47 (35.9%)

   Mandible\(^*\)

39 (29.8%)

   Maxilla

11 (8.4%)

   Floor of mouth

10 (7.6%)

   Buccal mucosa

7 (5.3%)

   Soft palate

2 (1.5%)

   Lower gingiva

1 (0.7%)

   Retromolar trigone

1 (0.7%)

   Composite

13 (9.9%)

      Mandible + Skin

4

      Mandible + oropharynx

2

      Maxilla + Skin

2

      Parotidectomy defect

2

      Mandible + Base of the tongue

1

      Buccal mucosa + Skin

1

      Hypopharynx + Skin

1

Free flap

 

   Anterolateral thigh free flap

64 (48.9%)

   Fibula free flap

45 (34.3%)

   Radial forearm free flap

22 (16.8%)

Compromised patients

10 (7.6%)

   Success in flap salvage

8

      Arterial insufficiency

4

      Venous thrombosis\(^\dagger\)

4

   Total flap loss

2

      Arterial insufficiency

2

  1. \(^*\)This includes all cases where both the lower gingiva and mandible bone were reconstructed. \(^\dagger\)This includes both cases where there was a problem with the anastomosis as well as cases where there was a venous compromise due to kinking