Table 2.

Reduction in benzodiazepine use across studies

	Bashir et al, 199416		Cormack et al, 199417			Heather et al, 200418
	Letter	Control	Letter	Letter + follow-up	Control	Letter	Letter + consultation	Control
Number	50	55	65	75	69	88	95	89
Decreased BZD	9	3	24	37	11	36	35	21
Ceased BZD	9	3	15	10	4	9	10	6
Proportional BZD reduction over 6 months			0.32	0.37	0.1	0.24	0.22	0.16
Standard deviation of reduction			0.43	0.41	0.44	0.93	0.94	0.93

BZD = benzodiazepine.