Table 1.
Name and description of Input Features and the presence of these features in the reduced dataset along with the Pearson Correlation with Perioperative Adverse Events.
| Feature | Feature used in model |
Description | Pearson Correlation with Target Feature |
|---|---|---|---|
| Wheezing | B, S | History of wheezing in the last 12 months (Yes, No, NA) | 0.041 |
| Prematurity | B, S | Was the child premature (less than 37 weeks)? (Yes, No, Unknown) | −0.050 |
| Family smokers | B, S | Do any family members smoke? (Yes, No, NA) | 0.003 |
| Anesthetic complications | B, S | History of previous anesthetic complications (Yes, No, NA) | 0.034 |
| Medication | B, S | Does the child take medications or natural remedies? (Yes, No, NA) | 0.037 |
| Handicap | B, S | Presence of metabolic/genetic disorder or neurological impairment (Yes, No, NA) | 0.023 |
| Age | B, S | Age of the patient (years) | −0.062 |
| Sex | B, S | Sex of the patient (Male, Female) | 0.007 |
| Weight | B, S | Weight of the patient (kg) | −0.052 |
| Surgical procedure | B, S | Is the procedure surgical? (Yes, No) | 0.039 |
| Nonsurgical procedure | B, S | Is the procedure nonsurgical? (Yes, No) | −0.039 |
| Anesthesia type | B, S | General anesthesia or sedation (Sedation, General Anesthesia, None) | 0.040 |
| Inpatient/outpatient | B, S | Inpatient or outpatient procedure | 0.07 |
| Procedure time scheduled | B, S | Is the procedure scheduled during regular working hours or after hours/weekend? (Regular hours, After-hours/weekend) | −0.011 |
| Asthma | B, S | History of any asthma diagnosis (Yes, No, NA) | 0.011 |
| Atopy | B, S | Symptoms of atopy in the last 12 months (Yes, No, NA) | 0.016 |
| Allergy | B, S | Any history of allergy (Yes, No, NA) | 0.004 |
| Snoring | B, S | Does the child snore? (Yes, No, NA) | 0.021 |
| ASA-PS score | S | ASA-PS score for the patient (I, II, III, IV, V) | 0.080 |
| Flu/cold | S | History of flu/cold in last 2 weeks (Yes, No, NA) | 0.043 |
| Fever | S | Presence of fever in last 24 hours (>38.5°C) (Yes, No, NA) | 0.004 |
| Urgency | S | Elective, urgent, or emergency surgery | 0.010 |
| Consultation | S | Face-to-face anesthesia consultation within 24 hours of procedure (Yes, No) | 0.027 |
| Type of anesthesia provider | S | Degree of specialization and role of provider (anesthesiologist with > 80% pediatric practice, anesthesiologist with 50% - 80% pediatric practice, anesthesiologist with < 50% pediatric practice, anesthesiologist in training, anaesthetic nurse, anaesthetic technician) | 0.017 |
| Experience | S | Years of experience of the anesthesia provider in charge of the case | −0.022 |
| Premedication | S | Sedative premedication given (Yes, No) | −0.003 |
| Parental presence at induction | S | Parent present during induction (Yes, No) | −0.039 |
| Monitoring | S | Type of monitoring (Standard (ECG, SpO2, anaesthetic agent, capnography, NIBP, temp), Standard + (arterial central line), Standard ++ (NIRS, EEG derived data), Standard minus (one equipment missing)) | −0.029 |
| Induction type | S | Inhalation, intravenous, or intramuscular | −0.012 |
| Airway interface type | S | Facemask, endotracheal tube (ETT), or supraglottic airway (SGAW) (Face Mask, SGAW, ETT, Other, None) | 0.005 |
| Fluids | S | Fluids given? (Yes, No) | 0.083 |
| Regional Anesthesia | S | Was regional anesthesia used? (Yes, No) | 0.001 |
| Ventilator Type | S | Type of ventilator (Spontaneous ventilation, pressure support ventilation, mechanical ventilation) | 0.007 |
B indicates that the feature was used in the booking model; S indicates that it was used in the day-of-surgery model.
ASA-PS: American Society of Anesthesiologists Physical Status.