Table 3

Final prediction model after stepwise selection

	β coefficient	OR	SE	95% CI	p Value	Risk score
Age≤65 years	0.55	1.73	0.21	1.15 to 2.59	0.01	1
GCS 14–15	1.15	3.16	0.28	1.83 to 5.44	<0.001	2
Normal vital signs	0.62	1.86	0.20	1.25 to 2.76	0.002	1
No operation performed	0.81	2.24	0.17	1.62 to 3.15	<0.001	1.5
ISS≤8	2.04	7.75	0.22	5.02 to 11.90	<0.001	4
Mental health	−0.81	0.45	0.20	0.30 to 0.65	<0.001	−1.5
Penetrating	0.59	1.80	0.25	1.10 to 2.94	0.02	1
Pedestrian	−0.49	0.62	0.24	0.38 to 0.99	0.045	−1
Falls	−0.66	0.52	0.19	0.36 to 0.75	<0.001	−1
Chest	−0.87	0.42	0.21	0.28 to 0.64	<0.001	−2
Spine/vertebral column	−0.80	0.45	0.25	0.28 to 0.73	0.001	−1.5
Lower limb	−1.26	0.28	0.18	0.20 to 0.40	<0.001	−2

Intercept β coefficient −1.828; Hosmer-Lemeshow test statistic p=0.48; OR—adjusted OR; GCS, Glasgow Coma Score; Normal vital signs, all of the following parameters met: systolic blood pressure 90–180 mm Hg, pulse 50–110 beats per minute and respiratory rate 10–24 breaths per minute