Table 1.
Variables collected.
| Variable | Data type | |
|---|---|---|
| Age | Continuous | |
| Systolic blood pressure (mmHg) | Continuous | |
| Pupil reactions to bright light (>3mm and fixed, unresponsive) | Binary | |
| Absolute base excess in arterial blood | Continuous | |
| Partial pressure of oxygen in arterial blood (PaO2) (mmHg) | Continuous | |
| Fraction of inspired oxygen(FiO2) (decimal) | Continuous | |
| ([FiO2 x 100]/PaO2) | Continuous | |
| Recovery from non-cardiac procedure | Binary | |
| Recovery from non-bypass cardiac procedure | Binary | |
| Recovery from bypass cardiac procedure | Binary | |
|
Low risk diagnosis*: Asthma Bronchiolitis Croup |
Obstructive sleep apnoea Diabetic ketoacidosis Seizure disorder |
Binary |
|
High risk diagnosis* Spontaneous cerebral haemorrhage Cardiomyopathy or myocarditis Hypoplastic left heart syndrome |
Neurodegenerative disorder Necrotising enterocolitis |
Binary |
|
Very high risk diagnosis* Cardiac arrest preceding ICU admission Severe combined immunodeficiency Leukaemia or lymphoma after first induction |
Bone marrow transplant recipient Liver failure is the main reason for ICU admission |
Binary |
*
Diagnostic risk categories from PIM3 (2).