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. 2012 Sep 12;2012(9):CD007146. doi: 10.1002/14651858.CD007146.pub3

McKiernan 2005.

Study characteristics
Methods RCT
Participants Setting: Wisconsin, USA
N = 113
Sample: recruited from fall registry and by single media release (60% women)
Age (years): mean 74.2, range 65 to 96
Inclusion criteria: aged ≥ 65 years; community‐dwelling; ≥ 1 falls in previous year; independently ambulatory
Exclusion criteria: not capable of applying Yaktrax walker correctly or discerning correct outdoor conditions to wear them
Interventions 1. Yaktrax walker (netting applied over usual footwear with wire coils to increase grip in winter outdoor conditions) 
2. Control: usual winter footwear
Outcomes 1. Rate of falls
Duration of the study 3 months ("one winter")
Notes  
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk Quote: "randomized"
Allocation concealment (selection bias) Unclear risk Insufficient information to permit judgement
Blinding of participants and personnel (performance bias)
All outcomes High risk Consent to participate included awareness of the intervention, and the absence of intervention. 19% of individuals in control group used the intervention device.  
Blinding of outcome assessment (detection bias)
Falls and fallers Unclear risk Falls reported by participants who were aware of their group allocation, using monthly calendars. Blinding of research staff not described. 
Incomplete outcome data (attrition bias)
Falls Low risk SeeAppendix 3 for method of assessment
Risk of bias in recall of falls Low risk Prospective. Fall diary returned by post.