Crotty 2009.
Methods | RCT | |
Participants | 4 rehabilitation centres in Adelaide, Australia 26 participants: 13 intervention, 13 control Inclusion criteria: no visual field impairments, binocular vision of minimum 6/12, minimum 1 month post stroke, desire to return to driving, clearance from medical practitioner to perform driving assessment, holder of driver's licence and driving pre stroke Exclusion criteria: visual field < 120 degrees; unable to provide informed consent; required the use of greater modifications than a spinner knob on the steering wheel, such as a left foot accelerator to complete on‐road assessment Mean age (years): 65.6 (SD 13.1) 92.31% male Side of lesion: 27% left, 58% right, 15% other Median time post stroke (days): 83.5 (range 29 to 816) |
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Interventions | Experimental intervention: training on the Dynavision device (developed to train visuomotor abilities) using a standardised programme of intervention of grading in complexity of tasks from self paced to apparatus paced, in which the time required to respond was reduced as skilled level increased Control intervention: no intervention and wait‐listed for 6 weeks Sessions were 3 times a week for 6 weeks, each session approximately 40 minutes (total of 12 hours) |
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Outcomes | Outcomes recorded at baseline and post intervention
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Notes | ||
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Computerised number generation |
Allocation concealment (selection bias) | Low risk | Allocation managed by an independent person |
Incomplete outcome data (attrition bias) All outcomes | Low risk | There were some missing data due to the number of participants who withdrew (12% withdrew from their allocated intervention, 16% of participants were lost to follow‐up) Intention‐to‐treat analysis performed |
Selective reporting (reporting bias) | Low risk | All outcomes and negative results reported |
Other bias | Unclear risk | Participation bias as participants may have been reluctant to enter study, particularly those with more disability and poor driving skills as results were sent to licensing agency |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Participants not blinded to allocation |
Blinding of outcome assessment (detection bias) All outcomes | Low risk | Outcome assessors blinded to allocation |