First peripheral oxygen saturation (SpO2) documented by emergency medical service professionals categorised by a paediatric triage model
| First SpO2 and O2 treatment | 1 | 2 | 3 | 4 | |
| 0–2 months Non-missing/N=336/556 | n (%) | 51 (15.2) | 39 (11.6) | 72 (21.4) | 174 (51.8) |
| 3–11 months Non-missing/N=834/1446 | n (%) | 115 (13.8) | 139 (16.7) | 167 (20.0) | 413 (49.5) |
| 1–2 years Non-missing/N=2706/4362 | n (%) | 342 (12.6) | 404 (14.9) | 817 (30.2) | 1143 (42.2) |
| 3–7 years Non-missing/N=2491/3424 | n (%) | 201 (8.1) | 273 (11.0) | 607 (24.4) | 1410 (56.6) |
| 8–17 years Non-missing/N=13 261/15 251 | n (%) | 507 (3.8) | 884 (6.7) | 2730 (20.6) | 9140 (68.9) |
| All ages Non-missing/N=19 628/25 039 | % | 6.2 | 8.9 | 22.4 | 62.6 |
1 (red): SpO2 <85% without O2 or SpO2 <90% with O2.
2 (orange): SpO2 85%–92% without O2 or SpO2 90%–96% with O2.
3 (yellow): SpO2 93%–94% without O2 or SpO2 ≥97% with O2.
4 (green): SpO2 ≥95% without O2.
1 (red): Life-threatening; 2 (orange): Urgent; 3 (yellow): Less urgent; 4 (green): Not urgent.
O2, oxygen.