Table A1.

Raw data feature columns with descriptions.

Column Namea	Descriptions
ODR_LOGN	Surgery serial number
ODR_CHRT	Chart Number
ODR_TXDT	Date
ODR_OPRM	Operating Room ID
ODR_DEPT	Department
ODR_PSRC	Patient Source (O: Outpatient, I: Inpatient, E: Emergency room)
ODR_BDNO	Bed number
ODR_EFLG	Emergency Surgery
ODR_IPNO	Inpatient Number
ODR_AS_D	Anesthesia Start (date)
ODR_AS_T	Anesthesia Start (time)
ODR_AE_D	Anesthesia End(date)
ODR_AE_T	Anesthesia End(time)
ODR_IN_D	Enter OR room (date)
ODR_IN_T	Enter OR room (time)
ODR_OS_D	Operation Start (date)
ODR_OS_T	Operation Start (time)
ODR_OE_D	Operation End (date)
ODR_OE_T	Operation End (time)
ODR_OT_D	Exit OR room (date)
ODR_OT_T	Exit OR room (time)
ODR_OP_1 ∼ODR_OP_4	Operating procedure type’s IDs
ODR_KF_2 ∼ODR_KF_4	N/A
ODR_SK_2 ∼ODR_SK_4	N/A
ODR_M_DR	Main Doctor
ODR_DN_1	scrub nurse 1
ODR_DN_2	scrub nurse 2
ODR_WN_1	circulation nurse 1
ODR_WN_2	circulation nurse 2
ODR_AD_1 ∼ODR_AD_4	N/A
ODR_PAYK	Payment category (01- Self-Pay, 30-Health insurance)
ODR_OPID	Operation ID
ODR_ANAM	Anesthesia methods
ODR_AN_D	Anesthesiologist (Doctor)
ODR_INDR	Anesthesia assessment Doctor
ODR_ASA	Anesthesia risk1∼5 (low∼high)
ODR_IRFG	N/A
ODR_IDFC	N/A
ODR_OPAG	N/A
ODR_FAID	N/A
ODR_DEAD	N/A
ODR_SAT1 ∼ODR_SAT5	N/A
ODR_ANS1 ∼ODR_ANS5	N/A
ODR_M_D2	Assistant Doctors 2 ∼4
ODR_PKN1 ∼ODR_PKN5	N/A
ODR_TIM1 ∼ODR_TIM5	N/A
ODR_CHRF	N/A
ODR_SPKD	N/A
ODR_ORMT	N/A
ODR_ANMT	N/A
ODR_ANT1 ∼ODR_ANT3	Anesthesia method’s notes
ODR_WOUD	Wound cleanness: 1: clean 2: cleaned contaminated 3: contaminated 4: dirty
ODR_ITE1 ∼ODR_ITE4	N/A
ODR_NPRO	N/A
ODR_PC01 ∼ODR_PC20	N/A
ODR_PRDG	Operating procedure name
ODR_FIND	Finding
ODR_OPF	Finding during procedure
ODR_OPP	Operating procedure
ODR_PODG	Post-operation diagnosis