Prehospital undertriage of older injured patients in western Switzerland: an observational cross-sectional study

Table 3 Association between age and primary and secondary outcomes

	Univariate	P	Multivariate*	P
Primary outcome: Admission to resus room with TTA	Univariate	P	Multivariate*	P
Admission to RR with TTA (ref age < 55)	1		1
Age 55–74	0.53 (045–0.62)	< 0.001	0.90 (0.72–1.12)	0. 342
Age ≥ 75	0.14 (0.11–0.17)	< 0.001	0.33 (0.24–0.45)	< 0.001
Women gender (ref Men)	0.33 (0.29–0.38)	< 0.001	0.52 (0.43–0.63)	< 0.001

Secondary outcome: Admission to trauma centre	Univariate	P	Multivariate*	P
Admission to TC (ref age < 55)	1		1
Age 55–74	0.71 (0.66–0.75)	< 0.001	0.73 (0.66–0.81)	< 0.001
Age ≥ 75	0.69 (0.66–0.72)	< 0.001	0.47 (0.42–0.53)	< 0.001
Women gender (ref Men)	0.83 (0.80–0.86)	< 0.001	0.70 (0.65–0.75)	< 0.001

Secondary outcome: Under Triage	Univariate	P	Multivariate*	P
Under triage (ref age < 55)**	1		1
Age 55–74	2.63 (1.76–3.93)	< 0.001	1.23 (0.71–2.12)	0.458
Age ≥ 75	6.63 (4.55–9.65)	< 0.001	1.81 (1.04–3.15)	0.035
Women gender (ref Men)	2.81 (2.06–3.83)	< 0.001	1.85 (1.18–2.90)	0.007

RR: Resuscitation Room; TTA: Trauma Team Activation; TC: Trauma centre
^*Covariate: gender, distance to trauma centre, SBP, GCS, BATT score, High energy trauma, motor vehicle accident, fall, penetrating injury (N = 36,403) ** Based on major trauma patients defined by a BATT score ≥ 8 or a MGAP < 18 (N = 690)

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