Results of inter-rater reliability for each variable
| Variable | n | Reliability | 95% CI | Method |
| Heart rate (bpm) | 87 | 0.84 | 0.80 to 0.89 | Weighted kappa |
| Temperature (°C) | 80 | 0.98 | 0.95 to 0.99 | Weighted kappa |
| Respiratory rate (breaths per min) | 86 | 0.71 | 0.62 to 0.79 | Weighted kappa |
| Oxygen saturation (%) | 87 | 0.62 | 0.48 to 0.74 | Weighted kappa |
| Behaviour (normal for age, agitated, floppy, listless and inappropriate) | 88 | 0.92 | 0.86 to 0.99 | PABAK |
| Breathing (audible grunt, stridor, tracheal tug, wheeze and none of the above) | 88 | 0.97 | 0.92 to 1.00 | PABAK |
| Nurse judgement (no judgement, low-level concern and child looks unwell/high-level concern) | 88 | 0.30 | 0.09 to 0.50 | PABAK |
| Total PAGE score (retrospectively calculated) | 73 | 0.64 | 0.53 to 0.73 | Weighted kappa |
PABAK, prevalence-adjusted and bias-adjusted kappa; PAGE, Paediatric Admission Guidance in the Emergency department.