Table 1.

Differences in the primary outcome measure between the three trial arms

	Median days abstinent from heroin
	Baseline	3 months	12 months	Relative risk (95% CI) vs TAU 3 months	Relative risk (95% CI) vs TAU 12 months
B-SBNT	15	18	17	0.96 (0.79–1.17)	0.96 (0.78–1.17)
PGS	18	18	18	0.93 (0.77–1.13)	1.00 (0.83–1.20)
TAU	20	23	25