Table 4.

Interaction analysis for total study population, TBI patients with altered consciousness, and severe TBI patients.

	Alcohol intake			Alcohol intake
	aOR (95% CI)	P for interaction		aOR (95% CI)	P for interaction
Total TBI patients			Total TBI patients
Poor functional outcome (MRS ≥ 4)		.14	Poor functional outcome (MRS ≥ 4)		<.01
Age, 18–64	0.72 (0.53–0.91)		Sex, Male	0.53 (0.44–0.79)
Age, 65–120	0.54 (0.32–0.83)		Sex, Female	0.94 (0.60–1.51)
Mortality		.72	Mortality		.04
Age, 18–64	0.62 (0.41–0.81)		Sex, Male	0.60 (0.42–0.79)
Age, 65–120	0.61 (0.32–1.24)		Sex, Female	0.79 (0.43–1.59)
TBI patients with altered consciousness			TBI patients with altered consciousness
Poor functional outcome (MRS ≥ 4)		.37	Poor functional outcome (MRS ≥ 4)		.54
Age, 18–64	0.44 (0.31–0.73)		Sex, Male	0.52 (0.33–0.72)
Age, 65–120	0.42 (0.29–0.73)		Sex, Female	0.61 (0.31–1.16)
Mortality		.17	Mortality		.03
Age, 18–64	0.51 (0.32–0.71)		Sex, Male	0.51 (0.37–0.77)
Age, 65–120	0.72 (0.34–1.43)		Sex, Female	0.65 (0.30–1.42)
Severe TBI patients			Severe TBI patients
Poor functional outcome (MRS ≥ 4)		.19	Poor functional outcome (MRS ≥ 4)		<.01
Age, 18–64	1.23 (0.82–1.63)		Sex, Male	0.91 (0.73–1.31)
Age, 65–120	0.69 (0.37–1.29)		Sex, Female	2.17 (1.09–4.24)
Mortality		.22	Mortality		.17
Age, 18–64	0.82 (0.52–1.35)		Sex, Male	0.89 (0.54–1.41)
Age, 65–120	1.42 (0.69–2.90)		Sex, Female	1.39 (0.52–3.24)

aOR = adjusted odds ratio, CI = confidence interval, MRS = Modified Rankin scale, TBI = traumatic brain injury.