Powered Wheelchair Skills Training for Persons with Stroke: A Randomized Controlled Trial

Feasibility and clinical applicability of a novel power wheelchair training approach

PURPOSE

To evaluate the feasibility and the clinical applicability of administering the COMET (cognition, occupation, mobility, evaluation and training) intervention.

MATERIALS AND METHODS

A pilot research was conducted with adults who were being considered for power wheelchair (PWC) provision, or who were recently provided a PWC, and who had been identified to benefit from a PWC training. The COMET intervention applies a goal directed, client-centred and occupation-based approach. Feasibility and applicability indicators were collected for: process, resources, management and treatment. Indicators were evaluated as "successful/unsuccessful". Clinical outcomes included the Goal Attainment Scale (GAS), the Canadian Occupational Performance Measure (COPM), the Power mobility Indoor Driving Assessment (PIDA) and the Wheelchair Skills Test (WST).

RESULTS

Four females (62.5 ± 3.5 years) with cognitive impairment participated in the study. Among the 13 indicators, 10 were successfully achieved. Indicators that did not meet the criteria for success were adherence rate, safety and treatment for the PIDA. Two adverse events were reported, with one minor injury. Participants demonstrated better than expected results on the GAS, the COPM scores and the WST. However, only two reported an improvement beyond 4% of the PIDA.

CONCLUSIONS

With few modifications, the COMET intervention and the study protocol will be feasible and applicable in clinical practice. Individuals with complex cognitive and mobility impairment demonstrated abilities to learn PWC use. Further investigation of the COMET intervention is required to evaluate its efficacy.Implications for rehabilitationA novel power wheelchair (PWC) training approach adapted to individual with complex mobility and cognitive impairments was developed: the COMET (cognition, occupation, mobility, evaluation and training) intervention.The COMET intervention applies a goal directed, client-centred and occupation-based approach.With minor modifications, the COMET intervention may be feasible and clinically applicable to train individuals with complex motor and cognitive impairments how to use a PWC.Further evaluation of the COMET intervention and lager control trialsare suggested.

Clinical stakeholders' perspective for the integration of an immersive wheelchair simulator as a clinical tool for powered wheelchair training

This study aimed to investigate clinical stakeholders' acceptance of an immersive wheelchair simulator as a potential powered wheelchair skills training tool. Focus groups, conducted in four rehabilitation centers, were used to obtain a rich understanding of participants' experiences and beliefs. Then, a cross-sectional survey of the simulator acceptability for clinical practice was created. Twenty-three rehabilitation therapists and clinical program directors participated in the focus groups and thirty-three responded to the survey. Participants generally expressed that use of the simulator would be complementary to training in an actual powered wheelchair, and that it could be useful for challenging situations in rehabilitation centers (e.g. anxious clients; when there is uncertainty around their potential to drive a powered wheelchair; tasks that cannot be assessed in a real-life environment). They also provided suggestions to improve the simulator (e.g. more feedback during tasks; possibility of adjusting control settings such as speed and sensitivity; possibility of adding varied control interfaces). Feedback received from key stakeholders clearly indicated that the wheelchair simulator would be complementary to training provided in a real context of use. However, some important limitations must be addressed to improve the simulator and promote its adoption by clinical programs, therapists and clients.

Effectiveness of the miWe Simulator Training on Powered Wheelchair-driving Skills: A Randomized Controlled Trial

OBJECTIVES

To evaluate the effectiveness of a home-based simulator training, in comparison with a videogame-based training, in terms of powered wheelchair driving skills, skills use in a real-world setting, and driving confidence.

DESIGN

Single-blinded randomized controlled trial.

SETTING

Community.

PARTICIPANTS

New powered wheelchair users (N=47) randomly allocated to simulator group (n=24, 2 drop-out) and control group (n=23, 3 drop-out).

INTERVENTIONS

The miWe wheelchair simulator (simulator group) or a kart driving videogame (control group) was setted-up at participants' homes (computer + joystick). They were instructed to use it at least 20 minutes every 2 days, during a period of 2 weeks.

PRIMARY OUTCOME MEASURE(S)

Assessments were done at baseline (T1) and post-training (T2) using the Wheelchair Skills Test Questionnaire (WST-Q, version 4.1), Wheelchair Confidence Scale (WheelCon), Assistive Technology Outcomes Profile for Mobility, and Life-Space Assessment (LSA). The time necessary to complete 6 WST tasks was measured with a stopwatch.

RESULTS

Participants of the simulator group significantly increased their WST-Q capacity score at T2 by 7.5% (P<.05), whereas the control group remained at the same score (P=.218). Participants of both groups rolled backward and went through a door significantly faster at T2 (P=.007; P=.016), but their speed did not change for the other skills. The WheelCon score significantly increased after training (+4% for the control group and +3.5% for the simulator group, P=.001). There was no T1-T2 difference between groups for the WST-Q performance scores (P=.119), the ATOP-Activity (P=.686), the ATOP-Participation scores (P=.814), and the LSA score (P=.335). No adverse events or side effects were reported during data collection or training.

CONCLUSIONS

Participants of both groups improved some skills and their wheelchair driving confidence. The simulator training group also demonstrated a modest post-training gain in their WST-Q capacity, but more studies would be needed to explore the long-term effects of the McGill immersive wheelchair simulator (miWe) simulator on driving skills.

Consensus for a power wheelchair training approach for people with cognitive impairments

PURPOSE

Power wheelchairs (PWCs) can enhance independent mobility. The World Health Organization recommends training PWC users. However, current PWC training approaches do not always meet the needs of PWC users with complex mobility and cognitive impairment. The aim was to co-develop an innovative approach to PWC training for individuals with complex mobility and cognitive impairments.

MATERIALS AND METHODS

A two-phase mixed method research, involving PWC users, clinicians and researchers throughout all aspects of the research, was realized. (1) Interviews and focus groups were used. (2) The Delphi method was followed to refine the PWC training approach.

RESULTS

Phase 1: Twenty-six stakeholders indicated that PWC training should consider the client as a partner, the learning environment, the proposed activities, interactions with the trainer and intervention format. Phase 2: two hundred and seven participants agreed that the PWC training should be goal directed, should be client-centred and occupation-based, should enhance client-therapist relationships and should be realized in a safe and adapted environment.

CONCLUSIONS

Stakeholders on PWC use came to agreement on key components that should be applied when training people with cognitive impairments.

Views of wheelchair users and caregivers regarding a passive safety monitoring system for electric powered wheelchair operators with cognitive impairment

The opinions of cognitively intact current wheelchair users and their professional caregivers were solicited to explore acceptability of the concept of a passive electric wheelchair-mounted movement monitor to track driving safety and cognitive impairment. Two focus groups of electric wheelchair users (N = 9), and two focus groups of staff caregivers (N = 8) were conducted at a congregate care facility. Participants also completed a questionnaire examining their perceptions of the concept. The results indicated most wheelchair users and staff caregivers were receptive to the idea of a passive safety monitoring system for wheelchairs to detect cognitive impairment. Three main and interrelated themes emerged regarding how the device could promote safety, how such a system might infringe upon the users' autonomy, and how and to whom the cognitive state information should be communicated. Legal, training, and marketing issues reflected similar concerns over balancing autonomy with safety issues. If successfully addressed, it appears there would be support for the device's use not only for older adults in institutional settings, but perhaps also among community living younger and older adults. A passive safety monitoring system for wheelchairs is acceptable to wheelchair users and can be successfully marketed if developers balance autonomy and safety concerns.

Relationships between Cognitive Functioning and Powered Mobility Device Use: A Scoping Review

Background. Powered mobility devices (PMD) promote independence, social participation, and quality of life for individuals with mobility limitations. However, some individuals would benefit from PMD, but may be precluded access. This is particularly true for those with cognitive impairments who may be perceived as unsafe and unable to use a PMD. This study explored the relationships between cognitive functioning and PMD use. The objectives were to identify cognitive functions necessary to use a PMD and describe available PMD training approaches. Methods. A scoping review was undertaken. Results. Seventeen studies were included. Four examined the predictive or correlational relationships between cognitive functioning and PMD use outcomes with intellectual functions, visual and visuospatial perception, attention, abstraction, judgement, organization and planning, problem solving, and memory identified as having a relation with PMD use outcome in at least one study. Thirteen others studied the influence of PMD provision or training on users’ PMD capacity and cognitive outcomes and reported significative improvements of PMD capacities after PMD training. Six studies found improved cognitive scores after PMD training. Conclusions. Cognitive functioning is required to use a PMD. Individuals with heterogeneous cognitive impairment can improve their PMD capacities. Results contribute to advancing knowledge for PMD provision.

Understanding the task demands for powered wheelchair driving: a think-aloud task analysis

BACKGROUND

Powered wheelchair use promotes participation in individuals with limited mobility, however training is required for safe and effective use. There is limited evidence on the task demands of powered wheelchair use to inform an evidence-based skills training programme.

OBJECTIVE

To conduct a systematic exploration of the task demands of indoor powered wheelchair use to identify frequently used skills, abilities, and knowledge.

METHODS

We used a two-phased think aloud process to conduct a task analysis of powered wheelchair use with experienced powered wheelchair users (n = 5) and expert clinicians (n = 5). Participants completed seven indoor driving tasks while speaking aloud (concurrent think aloud) and subsequently engaged in a structured qualitative interview to discuss skills, abilities, and knowledge used across each of the seven tasks (retrospective think aloud). We used directed content analysis to map the skills and abilities to the ICF framework and conventional content analysis to develop thematic areas of knowledge used while operating a powered wheelchair.

RESULTS

One-hundred and ten (110) distinct skills and abilities were identified and mapped to the ICF; 80 in the Body Structures and Functions domain, and 30 in the Activities and Participation domain. Approximately 50% of skills and abilities were mental functions. Four thematic knowledge domains were identified: knowledge of self, environment, wheelchair, and task.

CONCLUSION

Powered wheelchair use is complex and requires a variety of skills and abilities from all areas of human functioning, in addition to a wide range of knowledge. Training programmes should address a range of areas of skill development.IMPLICATIONS FOR REHABILITATIONPowered wheelchair use is a complex skill; training should develop skills from all.Domains of the ICF, including mental and physical functions.A range of knowledge is used while operating a powered wheelchair; training programs.Should include the development and application of necessary knowledge.Clinicians may consider a range of factors when assessing suitability for powered.Wheelchair user, however should acknowledge that while the range of skills idenotified.May be useful, they may not be critical for success in powered wheelchair use.

Psychosocial Impact of Powered Wheelchair, Users’ Satisfaction and Their Relation to Social Participation

Several studies showed positive effects of assistive technologies on psychosocial impact and participation of adults with mobility impairments. The purpose of this study was to assess the psychosocial and participation impact of powered wheelchairs. Participants were thirty persons with disabilities who use powered wheelchairs with diverse medical conditions. The Quebec User Evaluation of Satisfaction with Assistive Technology, the Psychosocial Impact of Assistive Devices Scale and the Activities and Participation Profile Related to Mobility were used, in addition to demographic, clinical and wheelchair related questions. The participants were satisfied with both the assistive technology and related services, with the lowest satisfaction scores belonging to those who had been using their wheelchairs for a longer period of time. We noticed significant restrictions in participation mostly among persons with longer wheelchair utilization. The most satisfied were the ones with better performance in terms of social participation. Psychosocial scores showed a positive impact with higher adaptability among persons who transitioned from a manual compared to those who already had a powered wheelchair. There was a positive psychosocial impact and therefore an increase in quality of life of its users.

A scoping review of powered wheelchair driving tasks and performance-based outcomes

Introduction: Wheelchairs and scooters promote participation and have positive effects on quality of life. However, powered wheelchairs (PW) use can be challenging and can pose safety concerns. Adequate PW assessment and training is important. There is a wide variety of tasks and PW driving assessment measures used for training and assessing PW driving ability in the literature and little consensus as to which tasks and outcomes are the most relevant. A scoping review of the literature was performed in order to characterize this extensive variety of tasks and performance-based outcomes used for training and assessing PW skills.Methods: A search of the literature was conducted in January 2017. Four databases were searched: CINAHL, Embase, PsycInfo and Medline. Articles were included if they contained at least one PW driving task.Results: 827 articles were screened and 48 articles were retained. PW driving tasks from each article were identified and categorized in terms of the environment in which they were performed: Driving in a controlled environment, ecological driving tasks, 2D virtual environment (VE) tasks, 3D VE tasks. The assessment measures formed a separate category. Subjective and objective performance-based outcomes related to PW driving were also identified and grouped into outcomes assessing speed and outcomes assessing accuracy.Conclusion: This scoping review provides an overview of tasks and performance outcomes used in the literature when training and assessing PW skills. The results of this review could guide future research when choosing appropriate tasks and performance outcomes for PW driving ability.Implications for rehabilitationThere is wide variety of tasks and performance-based outcomes for PW driving.Results showed that available assessment measures are not commonly used in research and that tasks used often lacked consistency across studies.New methods to measure the interaction of speed and accuracy are needed.The contents of this review could be used by researchers as a starting point when designing a PW task and selecting appropriate performance-based outcomes.

Effectiveness of the Wheelchair Skills Training Program: a systematic review and meta-analysis

OBJECTIVE

To conduct a systematic review synthesizing the evidence for the effectiveness of the Wheelchair Skills Training Program (WSTP).

DATA SOURCES

We searched PubMed, the Cochrane Library, CINAHL and Embase databases, as well as grey literature, up to 10 October 2017.

STUDY SELECTION

Randomized controlled trials (RCTs) assessing the effectiveness of the WSTP.

DATA EXTRACTION

Two independent reviewers screened articles and extracted data. Methodological quality was assessed using Cochrane's Risk of Bias Tool.

DATA SYNTHESIS

Meta-analyses (including sub-group analyses) were conducted for the Wheelchair Skills Test (WST) and WST Questionnaire (WST-Q) total capacity scores. We qualitatively assessed retention, WST/WST-Q subtotal and individual-skill capacity scores and other identified outcomes. The quality of evidence was determined using the Grades of Recommendation, Assessment, Development and Evaluation (GRADE) approach. Thirteen articles (581 participants) were included for analysis. The level of evidence was of moderate quality. The WSTP increased the post-training WST/WST-Q total capacity scores by 14.0% (95% CI: 7.4, 20.8; p < .0001) compared to no treatment, standard care or educational controls, a relative increase over baseline of 21.2%. Subgroup analyses showed that training was more effective for new wheelchair users. Retention of training effects was suggested by the absence of significant declines between tests post-training and at follow-up. The WSTP was found to have positive effects on some other outcomes. No serious adverse events were reported.

CONCLUSIONS

There is moderate quality evidence that the WSTP is a safe intervention that has a clinically meaningful effect on WST/WST-Q capacity scores and some other outcomes. Implications for rehabilitation A systematic review and meta-analysis of 13 randomized controlled trials on a total of 581 participants, using the Wheelchair Skills Training Program (WSTP) as the intervention, found that the WSTP increased Wheelchair Skills Test (WST) and WST Questionnaire (WST-Q) total capacity scores by 21.2% relative to baseline. Subgroup analyses showed that training was more effective for new wheelchair users. The WSTP was found to have positive effects on some other outcomes and no serious adverse events were reported. The WSTP warrants cautious implementation in clinical and educational settings.

Reliability and responsiveness of the Self-Efficacy in Assessing, Training and Spotting wheelchair skills (SEATS) outcome measure

OBJECTIVES

The aim of this study was to evaluate the internal consistency, test-retest reliability and responsiveness of the Self-Efficacy in Assessing, Training and Spotting manual wheelchair skills (SEATS-M) and Self-Efficacy in Assessing, Training and Spotting power wheelchair skills (SEATS-P).

METHODS

A 2-week test-retest design was used with a convenience sample of occupational and physical therapists who worked at a provincial rehabilitation centre (inpatient and outpatient services). Sixteen participants completed the SEATS-M and 18 participants completed the SEATS-P.

RESULTS

For the SEATS-M assessment, training, spotting and documentation sections, Cronbach's alpha coefficients ranged from 0.90 to 0.97, the 2-week intraclass correlation coefficients (ICC_1,1) ranged from 0.81 to 0.95, the standard error of measurements (SEM) ranged from 5.06 to 8.70 and the smallest real differences (SRD) ranged from 6.24 to 8.18. For the SEATS-P assessment, training, spotting and documentation sections, Cronbach's alpha coefficients ranged from 0.83 to 0.92, the ICCs ranged from 0.72 to 0.86, the SEMs ranged from 4.54 to 8.91 and the SRDs ranged from 5.90 to 8.27.

CONCLUSIONS

There is preliminary evidence that both the SEATS-M and the SEATS-P have high internal consistency, good test-retest reliability and support for responsiveness. These tools can be used in evaluating clinician self-efficacy with assessing, training, spotting and documenting wheelchair skills included on the Wheelchair Skills Test. Implications for Rehabilitation There is preliminary evidence that the SEATS-M and SEATS-P are reliable and responsive outcome measures that can be used to evaluate the self-efficacy of clinicians to administer the Wheelchair Skills Program. Measurement of clinicians' self-efficacy in this area of practice may enable an enhanced understanding of the areas in which clinicians lack self-efficacy, thereby informing the development of improved knowledge translation interventions.

Extent to Which Caregivers Enhance the Wheelchair Skills Capacity and Confidence of Power Wheelchair Users: A Cross-Sectional Study

OBJECTIVE

To test the hypothesis that caregivers enhance the wheelchair skills capacity and confidence of the power wheelchair users to whom they provide assistance, and to describe the nature of that assistance.

DESIGN

Multicenter cross-sectional study.

SETTING

Rehabilitation centers and communities.

PARTICIPANTS

Participants (N=152) included caregivers (n=76) and wheelchair users (n=76).

INTERVENTIONS

None.

MAIN OUTCOME MEASURES

Version 4.3 of the Wheelchair Skills Test (WST) and the Wheelchair Skills Test-Questionnaire (WST-Q). For each of the 30 individual skills, we recorded data about the wheelchair user alone and in combination (blended) with the caregiver.

RESULTS

The mean total WST capacity scores ± SD for the wheelchair users alone and blended were 78.1%±9.3% and 92.4%±6.1%, respectively, with a mean difference of 14.3%±8.7% (P<.0001). The mean WST-Q capacity scores ± SD were 77.0%±10.6% and 93.2%±6.4%, respectively, with a mean difference of 16.3%±9.8% (P<.0001). The mean WST-Q confidence scores ± SD were 75.5%±12.7% and 92.8%±6.8%, respectively, with a mean difference of 17.5%±11.7% (P<.0001). The mean differences corresponded to relative improvements of 18.3%, 21.0%, and 22.9%, respectively. The nature and benefits of the caregivers' assistance could be summarized in 7 themes (eg, caregiver provides verbal support [cueing, coaching, reporting about the environment]).

CONCLUSIONS

Caregivers significantly enhance the wheelchair skills capacity and confidence of the power wheelchair users to whom they provide assistance, and they do so in a variety of ways. These findings have significance for wheelchair skills assessment and training.

Manual Wheelchair Skills Training for Community-Dwelling Veterans with Spinal Cord Injury: A Randomized Controlled Trial

OBJECTIVES

To test the hypotheses that community-dwelling veterans with spinal cord injury (SCI) who receive the Wheelchair Skills Training Program (WSTP) in their own environments significantly improve their manual wheelchair-skills capacity, retain those improvements at one year and improve participation in comparison with an Educational Control (EC) group.

METHODS

We carried out a randomized controlled trial, studying 106 veterans with SCI from three Veterans Affairs rehabilitation centers. Each participant received either five one-on-one WSTP or EC sessions 30-45 minutes in duration. The main outcome measures were the total and subtotal percentage capacity scores from the Wheelchair Skills Test 4.1 (WST) and Craig Handicap Assessment and Reporting Technique (CHART) scores.

RESULTS

Participants in the WSTP group improved their total and Advanced-level WST scores by 7.1% and 30.1% relative to baseline (p < 0.001) and retained their scores at one year follow-up. The success rates for individual skills were consistent with the total and subtotal WST scores. The CHART Mobility sub-score improved by 3.2% over baseline (p = 0.021).

CONCLUSIONS

Individualized wheelchair skills training in the home environment substantially improves the advanced and total wheelchair skills capacity of experienced community-dwelling veterans with SCI but has only a small impact on participation.

Equipment provision after stroke: A scoping review of the use of personal care and mobility aids in rehabilitation

Introduction

The aim of this scoping review was to examine and synthesise literature on adaptive equipment use for personal care and mobility after stroke.

Method

We searched databases including Medline, EMBASE, AMED, CINAHL and Scopus to February 2016. Two authors independently screened 789 titles, identifying 28 studies for inclusion in the review.

Results

Findings were grouped into four themes: (1) stroke-specific impairments and consequences for equipment use and training; (2) meaning of equipment for people with stroke; (3) cost of equipment after stroke; and (4) conflicts between equipment provision and models of stroke rehabilitation.

Conclusion

The wide range of impairments after stroke increases complexity of how people use equipment. Nonetheless, training needs and the relationship between social context, identity and equipment use are increasingly better understood,. The findings highlight a tension between practice that seeks to re-train function by ‘normal’ movement without equipment and restoration of function by using compensation strategies involving use of equipment. However, there is no evidence that compensation strategies impede recovery of physical abilities. High-quality evidence about costs of equipment after stroke, which could inform policy decisions, is urgently needed.

Effectiveness of a Wheelchair Skills Training Program for Powered Wheelchair Users: A Randomized Controlled Trial

OBJECTIVES

To test the hypothesis that powered wheelchair users who receive the Wheelchair Skills Training Program (WSTP) improve their wheelchair skills in comparison with a control group that receives standard care, and secondarily to assess goal achievement, satisfaction with training, retention, injury rate, confidence with wheelchair use, and participation.

DESIGN

Randomized controlled trial.

SETTING

Rehabilitation centers and communities.

PARTICIPANTS

Powered wheelchair users (N=116).

INTERVENTION

Five 30-minute WSTP training sessions.

MAIN OUTCOME MEASURES

Assessments were done at baseline (t1), posttraining (t2), and 3 months posttraining (t3) using the Wheelchair Skills Test Questionnaire (WST-Q version 4.1), Goal Attainment Score (GAS), Satisfaction Questionnaire, injury rate, Wheelchair Use Confidence Scale for Power Wheelchair Users (WheelCon), and Life Space Assessment (LSA).

RESULTS

There was no significant t2-t1 difference between the groups for WST-Q capacity scores (P=.600), but the difference for WST-Q performance scores was significant (P=.016) with a relative (t2/t1 × 100%) improvement of the median score for the intervention group of 10.8%. The mean GAS ± SD for the intervention group after training was 92.8%±11.4%, and satisfaction with training was high. The WST-Q gain was not retained at t3. There was no clinically significant difference between the groups in injury rate and no statistically significant differences in WheelCon or LSA scores at t3.

CONCLUSIONS

Powered wheelchair users who receive formal wheelchair skills training demonstrate modest, transient posttraining improvements in their WST-Q performance scores, have substantial improvements on individualized goals, and are positive about training.

Exploratory Validation of a Multidimensional Power Wheelchair Outcomes Toolkit

OBJECTIVE

To evaluate the relation among the measures in a power wheelchair outcomes toolkit.

DESIGN

We performed path analysis of cross-sectional data from self-report questionnaires and 1 objective measure.

SETTING

Six sites.

PARTICIPANTS

A convenience sample of power wheelchair users (N=128). Most (n=69; 53.9%) participants were women. Multiple sclerosis and spinal cord injury/disease were the most common diagnoses.

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASURES

The power wheelchair version of the Wheelchair Skills Test version 4.1 was used to carry out an objective evaluation of capacity to perform 32 wheelchair skills. The Late-Life Disability Index measured frequency of participation in 16 life activities. The Life-Space Assessment measured independence, extent, and frequency of mobility. The Assistive Technology Outcomes Profile for Mobility was used to assess perceived difficulty performing activity and participation using assistive technology. The Wheelchair Use Confidence Scale for powered wheelchair users captured users' self-efficacy with wheelchair use.

RESULTS

Wheelchair confidence was independently associated with less difficulty with activity (β=.028, P=.002) and participation (β=.225, P<.001), increased life space (β=.095, P<.003), and greater wheelchair skills (β=.30, P<.001). Less perceived difficulty with activity was independently associated with increased frequency of participation (β=.55, P<.001). Life-space mobility was independently associated with increased frequency of participation (β=.167, P<.001). Less difficulty with participation was independently associated with greater life-space mobility (β=.59, P<.001) and greater frequency of participation (β=.13, P<.001).

CONCLUSIONS

This study provides empirical support for the measures included as part of the power wheelchair outcomes toolkit. They appear to provide complementary information on a variety of constructs related to power wheelchair use.

Measurement properties of the Wheelchair Skills Test-Questionnaire for powered wheelchair users

PURPOSE

To evaluate the test-retest reliability, concurrent validity and responsiveness of the Wheelchair Skills Test - Questionnaire (WST-Q) Version 4.1 for powered wheelchair users.

METHODS

A volunteer sample of 72 community-dwelling, experienced powered wheelchair users, ranging in age from 50 to 77 years, participated in this study. Participants completed measures at baseline and 1 month later.

RESULTS

Mean ± standard deviation total percentage WST-Q scores at baseline and 1 month were 83.7% ± 10.9 and 86.3% ± 10.0 respectively. Cronbach's alpha was 0.90 and the 1 month test-retest intraclass correlation coefficient (ICC1,1) was 0.78 (confidence interval: 0.68-0.86). There were no floor or ceiling effects. Percentages of agreement between baseline and 1 month for individual skills ranged from 72.2% to 100%. The correlations between the WST-Q and the objective Wheelchair Skills Test (WST), WheelCon and Life Space Assessment were r = 0.65, r = 0.47 and r = 0.47 respectively. The standard error of measurement (SEM) and smallest real difference (SRD) were 5.0 and 6.2 respectively.

CONCLUSION

The WST-Q 4.1 has high internal consistency, strong test-retest reliability and strong support for concurrent validity and responsiveness.

IMPLICATIONS FOR REHABILITATION

There is evidence of reliability, validity and responsiveness of the Wheelchair Skills Test - Questionnaire (WST-Q) among experienced older adult powered wheelchair users. The WST-Q can be used to measure powered wheelchair skills, guide intervention and measure change over time.