Table 3.

Variables independently associated with insomnia symptoms during detoxification process.

	OR	95% CI	p
Gender (female)	3.43	2.01–5.86	0.0001
Polysubstance users	2.85	1.79–4.54	0.0001
Anxiety disorder comorbidity	2.09	1.06–4.12	0.03
Prior admission for detoxification	1.22	1.07–1.38	0.002
Admission for heroin detoxification	1.77	0.80–3.94	0.16
Cluster B personality disorder	1.22	0.74–2.03	0.44