Pellfolk 2010.

Methods	Cluster‐randomised controlled trial
Participants	Country: Sweden 40 group dwelling units for people with dementia All residents of the included group dwelling units
Interventions	Intervention: educational intervention Control: usual care
Outcomes	Residents: physical restraint status, falls, benzodiazepine and neuroleptics' use Staff: knowledge, attitudes (The Perceptions of Restraints Use Questionnaire (PRUQ))
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Adequate sequence generation?	Low risk
Allocation concealment?	High risk
No baseline imbalance between groups	Unclear risk	Unclear
No loss of clusters bias	Low risk
Outcome assessors blinded to treatment allocation	High risk
No recruitment bias	Unclear risk	Unclear
Methods of analysis adequate for cluster‐randomised trials	Low risk	Only for the likelihood of being restrained, not for sample size calculation, no intra‐cluster correlation coefficient was calculated.