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. 2011 Nov 9;2011(11):CD004963. doi: 10.1002/14651858.CD004963.pub3

Schoenfelder 2004.

Methods Type of study: RCT.
Participants Number of participants randomised: 81 
 Losses: At 3 months, exercise n = 9, control n = 6; at 6 months, exercise n = 3, control n = 5
N = 81 
 Age: 64 ‐ 100 years, mean 84.1. 
 Sex: 62 women, 19 men.
Health Status defined by authors: frail
Residential status of participants: nursing home 
 Setting: USA. 
 Inclusion: Recruited from nursing homes, 65 years and over, independent ambulators, English speakers, scored 20 plus on MMSE. 
 Exclusion: unstable physical conditions.
Interventions EXERCISE GROUP (MULTIPLE): (N = 42) strength and endurance training plus 10 minutes walking. 
 CONTROL GROUP: (N = 39) attention placebo. 
 Duration and intensity: exercise group ‐ 15 ‐20 minutes, 3 times per week x 3 months. Control group ‐ 30 minutes weekly x 3 months. 
 Supervisor: student nurses. 
 Supervision: individual. 
 Setting: institutional.
Outcomes Parallel stance (max 10s) (s). 
 Semi tandem stance (max 10s) (s). 
 Tandem stance (max 10s) (s). 
 Walking speed over 6 metres (m/s).
Compliance/adherence: not reported
Adverse events: not reported
Notes  
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk Method of randomisation not known (matched pairs by risk assessment for falls)
Allocation concealment (selection bias) Unclear risk Insufficient reporting to permit judgement
Incomplete outcome data (attrition bias) 
 All outcomes High risk Not adequately addressed
Selective reporting (reporting bias) Unclear risk Insufficient reporting to permit judgement
Other bias Low risk The study appears to be free of other sources of bias
Blinding (participant) High risk Not possible
Blinding (assessor) Low risk Assessors blinded.
Were the treatment and control group comparable at entry? Low risk No differences reported on baseline characteristics with a potential to influence the effect of the intervention
Was the surveillance active, and of clinically appropriate duration (i.e. at least 3 months post intervention)? Low risk Follow‐up at 3 months post intervention