Do patients referred to emergency departments after being assessed in primary care differ from other ED patients? Retrospective analysis of a random sample from two German metropolitan EDs

Table 4 Multivariable analysis of parameters associated with hospital admission in all patients

Parameter	Regression coefficient	p	Odds ratio	95% CI
Referral	1.380	< .001	3.976	2.595–6.091
Parenteral medication	0.984	< .001	2.674	1.976–3.619
MTS higher urgency per level	0.545	< .001	1.725	1.421–2.093
Transport by EMS	0.484	.001	1.623	1.212–2.172
Number of resources used	0.356	< .001	1.428	1.311–1.556
≥ 1 abnormal vital parameter	0.312	.090	1.367	0.953–1.960
CCI	0.237	< .001	1.268	1.196–1.344
Trauma	− 0.463	< .001	1.268	1.196–1.344
Ultrasound in ED	− 0.799	< .001	0.450	0.308–0.658
Nursing home resident	− 0.813	.001	0.444	0.270–0.728

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