Table 3.

Comparison of (re)lapse in GHB use in the 3 months after detoxification between patients prescribed baclofen according to the study protocol (PP) and patients who receive treatment as usual

	TAU	Baclofen + TAU	Test statistic	p value
Patient completed follow-up	55	12
Lapse (any use)	47% (n = 26)	25% (n = 3)	χ2 = 1.99	0.158
Relapse	38% (n = 21)	8% (n = 1)	χ2 = 3.97	0.046
Patients including drop-out	70	13
Relapsea	50% (n = 35)	15% (n = 2)	χ2 = 5.31	0.021

GHB Gamma-hydroxybutyrate, PP per protocol, TAU treatment as usual

^aDrop-out is considered relapse in GHB dependent patients, therefore only relapse is mentioned