Green 2002 (Continued)
Incomplete outcome data (attrition bias) All outcomes
Low risk Incompleteoutcome dataadequatelyaddressedandunlikely to seriously alter the results
Selective reporting (reporting bias) Low risk All of the studies’ prespecified outcomes have been reported in the prespecified way
Reliable ascertainment of falls/fallers outcome
High risk Fall ascertainment method used was retrospective recall (3month period)
Haran 2010
Methods Parallel assessor-blinded RCT
Participants A subgroup of 46 people with stroke (N = 606 for the total group) who were regular wearers of multifocal glasses and had an increased risk of falls
Interventions Intervention group (N = 22): examination by an optometrist with prescription for a pair of single lens distance glasses Control group (N = 24): examination by an optometrist
Outcomes Rate of falls, number of fallers, number of fall-related fractures, and quality of life
Notes
Risk of bias
Bias Authors’ judgement Support for judgement
Random sequence generation (selection bias)
Unclear risk Insufficient information provided about the sequence generation process
Allocation concealment (selection bias) Low risk Quote: “... by using sequentially numbered opaque envelopes containing group assignment.” (page 2)
Blinding of outcome assessment (detection bias) All outcomes
High risk Participants recorded falls themselves through the use of a falls calendar
Incomplete outcome data (attrition bias) All outcomes
Low risk Incompleteoutcomedataadequatelyaddressedandunlikely to seriously alter the results
Selective reporting (reporting bias) Low risk All of the studies’ pre-specified outcomes have been reported in the pre-specified way
Reliable ascertainment of falls/fallers outcome
Low risk Participantsreturnedthefallscalendareachmonth.Follow-up telephone calls were made as required
Interventionsforpreventingfallsinpeopleafterstroke(24 Review) Copyright © 2013 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.
Holmgren 2010
Methods Single-centre, single-blinded RCT
Participants A total of 34 people after stroke with risk of falls were included in the study