Table 4.

Factors associated with hospitalization, results of multivariate logistic regression

			Crude		Adjusted
	Total	Hospitalized	OR	95% CI	OR	95% CI
Age (+10 years)			1.0	0.9-1.0	1.1**	1.0-1.2
Sex
Males	1319	237 (18)	Ref
Females	689	173 (25)	1.5*	1.2-1.9	1.1	0.8-1.5
Main agents
Other agents	609	188 (31)	Ref
Ethanol	859	65 (8)	0.2*	0.1-0.3	0.2*	0.1-0.3
Opioids	437	76 (17)	0.5*	0.3-0.7	0.4*	0.3-0.6
GHB	48	40 (83)	11.2*	5.1-24.4	12.5*	5.4-29.3
Paracetamol	55	41 (75)	6.6*	3.5-12.3	3.8*	1.9-7.6
GCS†
Awake (15)	990	206 (21)	Ref
Drowsy (8-14)	908	167 (18)	0.9	0.7-1.1	1.6**	1.2-2.3
Comatose (< 8)	109	37 (34)	2.0**	1.3-3.0	2.3**	1.3-4.3
Complications
Number	1726	299 (17)	Ref
Respiratory depression	61	33 (54)	5.6*	3.3-9.5	7.8*	4.2-14.4
Others	221	78 (35)	2.6*	1.9-3.5	3.7*	2.5-5.3
Intention
Accidents	334	70 (21)	Ref
AOSA	1439	200 (14)	0.6**	0.5-0.8	0.9	0.6-1.4
Possible suicide attempt	133	70 (53)	4.1*	2.7-6.4	4.5*	2.8-7.3
Definite suicide attempt	88	59 (67)	7.7*	4.6-12.9	8.2*	4.7-14.4
Unknown	14	11 (79)	13.8*	3.8-50.9	2.8	0.5-17.2
Total cases	2008	410 (20)

*Significant, p < 0.001, **significant, p < 0.05

AOSA: accidental overdose with substances of abuse

†Glasgow Coma Scale: one case with a missing value

Age was subtracted by 10 in the analysis