Table 5

Risk of post-traumatic lesions, neurosurgical intervention, and unfavourable outcome in patients after mild head injury

	Post-traumatic injury			Neurosurgical intervention			Unfavourable outcome
	OR	95% CI	p Value	OR	95% CI	p Value	OR	95% CI	p Value
OR, odds ratio; CI, confidence interval.
Univariate analysis
Skull fracture	71.00	49.67 to 101.48	<0.001	48.06	29.22 to 79.02	<0.001	66.83	34.03 to 131.26	<0.001
Glasgow coma score	37.43	28.54 to 49.09	<0.001	39.20	23.61 to 65.10	<0.001	69.06	32.44 to 147.02	<0.001
Clinical findings	8.88	6.21 to 12.71	<0.001	7.12	3.40 to 14.88	<0.001	4.15	1.83 to 9.42	<0.001
Risk factors	3.48	2.73 to 4.43	<0.001	1.22	0.77 to 1.96	0.395	7.10	2.97 to 16.97	<0.001
Neurological deficits	8.47	6.62 to 10.84	<0.001	6.06	3.67 to 10.01	<0.001	19.93	10.38 to 38.33	<0.001
Multivariate analysis
Skull fracture	31.01	20.36 to 47.21	<0.001	11.06	6.05 to 20.23	<0.001	10.51	4.63 to 23.85	<0.001
Glasgow coma score	11.74	8.42 to 16.37	<0.001	13.73	7.21 to 26.17	<0.001	12.01	4.76 to 30.31	<0.001
Clinical findings	4.31	2.81 to 6.61	<0.001	2.94	1.33 to 6.51	0.008	–	–	0.951
Risk factors	2.21	1.62 to 3.01	<0.001	0.45	0.25 to 0.78	0.005	4.26	1.68 to 10.81	0.002
Neurological deficits	1.90	1.33 to 2.71	<0.001	–	–	0.107	2.93	1.33 to 6.46	0.008