Final outcomes to be included in a core outcome set from the Delphi process
| Domain (subdomain) | Outcome |
| Physiological and clinical (general symptoms) | Appearance |
| Level of consciousness | |
| Non-respiratory physiological parameters/vital signs | |
| Worsening illness | |
| Physiological and clinical (feeding; nutrition and hydration) | Feeding |
| Need for feeding tube | |
| Inhalation (breathing in) of milk; fluids or solids | |
| Physiological and clinical (respiratory distress) | Apnoea |
| Oxygen saturation | |
| Cyanosis | |
| Effort of breathing | |
| Paediatric Early Warning score | |
| Physiological and clinical (respiratory interventions and support) | Need for respiratory support |
| Resource use (hospital related short term) | Critical care admission |
| Death | Death |
| Adverse events | Serious adverse events |