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. 2012 Mar 14;2012(3):CD005315. doi: 10.1002/14651858.CD005315.pub2

Willmott 1986.

Methods  
Participants  
Interventions  
Outcomes  
Notes See Table 20
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk "randomized" ‐ method of randomisation not described.
Allocation concealment (selection bias) Unclear risk Not described.
Blinding (performance bias and detection bias) 
 Subjective outcomes High risk Study was not blinded.
Blinding (performance bias and detection bias) 
 Objective outcomes High risk Study was not blinded.
Incomplete outcome data (attrition bias) 
 All outcomes Unclear risk Withdrawals and drop‐outs not described.
Selective reporting (reporting bias) High risk Insufficient data provided for extraction: Gait speed, and step length.
Protection from contamination? High risk Cross‐over trial.