Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Withdrawal severity
[33] Systematic review	Number of people unclear Data from 1 RCT	Withdrawal severity (measured by Short Opiate Withdrawal Scale) with buprenorphine with oxazepam	Reported as withdrawal severity significantly lower with buprenorphine compared with oxazepam No further data reported	Effect size not calculated	buprenorphine