Table 2.

Mortality (1-day and 30-day) at high, medium and low risk classes categorized according to the prehospital National Early Warning Score (NEWS)

		NEWS class
		High	Medium	Low
	Missions, n	718	1832	9876
1-day mortality	Number of deaths	153	17	21
	Mortality, % (95%CI)	21.3 (18.3 to 24.5)	0.9 (0.5 to 1.5)	0.2 (0.1 to 0.3)
	RR (95%CI)	101.5 (69.0 to 144.1)	4.4 (2.3 to 8.2)	1.0 (ref.)
	p	< 0.001	< 0.001
30-day mortality	Number of deaths	238	115	208
	Mortality, % (95%CI)	33.1 (29.6 to 36.8)	6.3 (5.2 to 7.4)	2.1 (1.8 to 2.4)
	RR (95%CI)	16.0 (13.6 to 18.0)	3.0 (2.4 to 3.7)	1.0 (ref.)
	p	< 0.001	< 0.001

RR relative risk, 95% CI 95% confidence interval

There were 191 early 1-day deaths and 561 2–30 day deaths

Wald’s test was used for statistical comparison with reference level