Table 3.

Odds ratios (ORs)

Markers of crowding	Admission to hospital, OR (95% CI)	Admission the PICU, OR (95% CI)	RTED within 7 days (95% CI)
Daily proportion LWBS	2.1 (1.2, 3.7)	8.9 (1.1, 71.3)	0.4 (0.2, 0.7)
Mean shift LOS (referent: 1st quartile: <2.6 h)
2nd Quartile: 2.6–3.4 h	1.1 (1.0, 1.1)	1.0 (0.7, 1.3)	1.0 (1.0, 1.0)
3rd Quartile: 3.5–4.4 h	1.1 (1.1, 1.3)	0.8 (0.6, 1.1)	1.0 (1.0, 1.1)
4th Quartile: >4.5 h	1.2 (1.1, 1.3)	0.9 (0.7, 1.2)	1.0 (0.9, 1.0)

CI confidence interval; LOS length of stay; LWBS leaving without being seen; PICU paediatric intensive care unit; RTED return to emergency department