Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
[31] RCT 3-armed trial	310 people In review [30]	Drowsiness 52% with diazepam (15–35 mg/day) 14% with placebo Absolute numbers not reported	P <0.05 for diazepam v placebo	Effect size not calculated	placebo
[31] RCT 3-armed trial	310 people In review [30]	Dizziness 11% with diazepam (15–35 mg/day) 3% with placebo Absolute numbers not reported	P <0.05 for diazepam v placebo	Effect size not calculated	placebo
[18] Systematic review	People with anxiety disorders Data from 1 RCT	Drowsiness 71% with diazepam 13% with placebo Absolute numbers not reported	P = 0.001	Effect size not calculated	placebo
[18] Systematic review	People with anxiety disorders Data from 1 RCT	Dizziness 29% with diazepam 11% with placebo Absolute numbers not reported	P = 0.001	Effect size not calculated	placebo