Table 5.

Deep neural network with synthetic minority oversampling technique performance variables

All variables - Top 10 (DNN)	Preoperative variables only - Top 10 (DNN)
Cardiac disease	Number of VTEs 12 months prior to surgery
Decompression/laminectomy	DVT 12 months prior to surgery
Utilization of any chemoprophylaxis weeks/in 30 days (formula)	Presence of VTE 12 months prior to surgery
Timing of heparin (days)	PE 12 months prior to surgery
ICU admission	Staged
Pulmonary disease	Osteotomy
Transfusion	Number of stages
DVT 12 months prior to surgery	Thoracic
EBL	Epidural hematoma 12 months prior to surgery
Osteotomy	Scoliosis

DNN - Deep neural network; EBL - Estimated blood loss; VTEs - Venous thromboembolic events; DVT - Deep venous thrombosis; PE - Pulmonary embolism; ICU - Intensive care unit