Measurement properties of the WheelCon for powered wheelchair users

Wheelchair users' satisfaction after provision using the WHO 8-step guidelines: A pilot study

BACKGROUND

Wheelchairs are vital for the successful rehabilitation and inclusion of people with mobility disabilities; 10% of the population with disabilities needs a wheelchair, but only 15% have access to an adequate one. Not user-configured wheelchairs may lead to postural deformities and pressure ulcers, thus negatively impact user satisfaction, wheelchair skills, and quality of life.

OBJECTIVE

To assess the impact of the 8-step "Guidelines on the provision of manual wheelchairs in less-resourced settings" from the World Health Organization (WHO) on user satisfaction, wheelchair skills, and quality of life of Mexican manual wheelchair users.

METHODS

12 wheelchair users with spinal cord injury that received rehabilitation were recruited. Volunteers were provided a wheelchair and cushion following the WHO 8-step guidelines. Assessment of QUEST, WHOQOL-Bref, and WST-Q was performed at the beginning of the study and 12 months later.

RESULTS

Significant improvement was observed in terms of satisfaction (QUEST; P = 0.009) after receiving the wheelchair and the foam cushion (QUEST; P = 0.004). WHOQol-Bref did not denote significant differences. For the dimensions assessed by the WST-Q scores, a significant 10.9% improvement was observed in both, capacity (P = 0.022) and performance (P = 0.009).

CONCLUSIONS

The application of the WHO 8-step guidelines for wheelchair provision may contribute to increase user satisfaction regarding the wheelchair and cushion devices as well as the prescription process as determined by the QUEST. According to the WST-Q, functional capacity and mobility may also be improved by following the 8-step guidelines.

Exploration of pediatric manual wheelchair confidence among children, parents, and occupational therapists: a qualitative study

PURPOSE

Manual wheelchair (MWC) confidence is a predictor of adult life-space mobility and social participation. To date, scientific literature specific to pediatric MWC confidence is scarce which prevents in-depth understanding. The objective of this study was to explore the perceptions of pediatric MWC users (PMWU), parents, and occupational therapists regarding pediatric MWC confidence.

METHODS

Five focus groups were conducted with PMWUs (n = 12) and occupational therapists (n = 9), and semi-structured interviews were conducted with parents of PMWUs (n = 2). Inductive thematic analysis was performed following verbatim transcription of audio recorded material.

RESULTS

Three overarching themes were identified across PMWUs, parents, and occupational therapists: (1) "MWC confidence is not a clinical priority" depicted the construct's varying level of clinical priority and perceived abstractness; (2) "MWC confidence is both a child and parent consideration" revealed nuances between the PMWU's MWC confidence and the parents' perception of the PMWU's MWC confidence; and (3) "Opportunities to develop MWC confidence are context-specific" contrasted afforded and unafforded opportunities to experience independent MWC mobility.

CONCLUSIONS

Pediatric MWC confidence is an important aspect of wheelchair use that is shaped by a multitude of factors in PMWU's lives. This new area of pediatric study provides support for the need to measure this important construct.IMPLICATIONS FOR REHABILITATIONThis study is the first to explore children's, parents', and occupational therapists' perceptions of pediatric MWC confidence.Pediatric MWC confidence impacts MWC use in a multifaceted fashion.Future studies should consider the development and validation of a self-report measure to assess pediatric MWC confidence.

French-Canadian translation, cultural adaptation, and preliminary evaluation of the wheelchair service provision - basic test validity among occupational therapy students

PURPOSE

The objectives were: (1) to translate and adapt the International Society of Wheelchair Professional (ISWP) basic Wheelchair Service Provision Test (bWSPT) into French-Canadian and (2) to conduct a preliminary evaluation of the French-Canadian version of the ISWP bWSPT internal consistency and relations with other variables among French-Canadian occupational therapy students.

METHODS

For Phase 1, based on the International Test Commission Guidelines for Translating and Adapting Tests, a forward translation and adaptation from English to French-Canadian was conducted by a translation team. For Phase 2, the validity evidence of the French-Canadian bWSPT was evaluated through internal consistency and comparison of bWSPT scores and final grades of a wheelchair-specific course with a sample of occupational therapy students (positive, moderate correlation hypothesized). Internal consistency was measured with Cronbach's α. The correlation was calculated using the Spearman's Rank Correlation Coefficient.

RESULTS

For phase 1, 61 of 167 items of the forward adaptation were revised and modified. All revisions were a consensus by the translation team. For phase 2, we found a Cronbach's α of 0.50 and a correlation of ⍴ = 0.27 (p = 0.43) between the bWSPT French-Canadian version and the wheelchair-specific course final grade. The low variability of the data may explain the lower-than-expected correlation. Other possible data-driven reasons have been explored using post-hoc analysis.

CONCLUSION

The ISWP bWSPT, French-Canadian version, is not internally consistent and demonstrates a non-statistically significant, positive, weak correlation with the final grade of a wheelchair service provision-specific course among a cohort of 35 occupational therapy students.IMPLICATIONS FOR REHABILITATIONThe lack of adequately educated wheelchair service providers is a contributing factor to inappropriate wheelchair provision worldwide.The ISWP Wheelchair Service Provision Basic Test (ISWP bWSPT) has been created to evaluate competency among wheelchair service providers and provides a standardized test recognized internationally.A French-Canadian version of the ISWP bWSPT allows competency testing of French-speaking wheelchair service providers across Canada.This study shows that the French-Canadian version of the test is not internally consistent and has a low correlation with a wheelchair provision-specific course among a cohort of 35 occupational therapy students at a French-Canadian university suggesting further refinement is required to improve its measurement properties in this population of test-takers.

Exploring the Influence of a Community-Based Peer-Led Wheelchair Skills Training on Satisfaction with Participation in Children and Adolescents with Cerebral Palsy and Spina Bifida: A Pilot Study

BACKGROUND

Peer-led approaches improve satisfaction with participation, wheelchair skills and wheelchair use self-efficacy in adults, but the evidence is limited in children. This pilot study aimed to explore the influence of community-based, peer-led, group wheelchair training program (i.e., Seating To Go) on satisfaction with participation (primary outcome), wheelchair skills, and wheelchair use self-efficacy in children and adolescents with cerebral palsy and spina bifida.

METHODS

A single group pre-post design was used. Invitations were shared online and diffused by clinicians and advocacy and provider groups to recruit a convenience sample of eight pediatric wheelchair users. Participants completed the Seating To Go program in groups that were facilitated by adult wheelchair users. Satisfaction with participation (Wheelchair Outcome Measure-Young People), wheelchair skills (Wheelchair Skills Test), wheelchair use self-efficacy (Wheelchair Use Confidence Scale), and perceived wheelchair skills capacity (Wheelchair Skills Test Questionnaire; proxy rating: parents) were evaluated before and after the Seating To Go program. Descriptive statistics and nonparametric longitudinal data analysis were conducted to explore changes in all outcomes from baseline to post-intervention.

RESULTS

Pediatric wheelchair users (ranging in age from 5 to 15 years) and their parents reported statistically significant improvements in satisfaction with participation. The improvements in wheelchair skills and wheelchair confidence were also statistically significant, but not the parents' perception of their children's wheelchair skills.

CONCLUSIONS

A community-based peer-led approach to wheelchair skills training seems promising for improving wheelchair outcomes in pediatric wheelchair users. Further controlled studies with larger samples are warranted.

Predictors of Psychological Distress and Confidence Negotiating Physical and Social Environments Among Mobility Device Users

OBJECTIVE

We conducted an intersectional analysis to explore how demographic characteristics and mobility device use were associated with psychological distress (depression and anxiety) and confidence negotiating physical and social environments.

DESIGN

Cross-sectional data were collected using the Hospital Anxiety and Depression Scale, modified Wheelchair Use Confidence Scale, and self-reported functional independence scale.

PARTICIPANTS

The sample included 105 participants. Primary mobility devices used included mobility scooters (27%), power wheelchairs (26%), manual wheelchairs (25%), walkers (11%), and cane or crutch (12%). The mean age of participants was 58 yrs, 53% were female, and 52% lived alone and were functionally independent with the use of assistive technology.

RESULTS

We were able to explain between 39% and 65% of the variance (adjusted R2) in the dependent variables with parsimonious regression models. Age was an independent predictor of all outcomes. Women were less confident negotiating the physical environment, and walker use was associated with depression and lower confidence negotiating physical environments, but increased confidence negotiating social environments.

CONCLUSIONS

Age is associated with psychosocial outcomes for assistive device users, and those who use walkers may experience increased challenges with depression and negotiating the physical environment. Pending confirmatory research, the findings may have important implications for targeted interventions related to device provision.

Correlates of self-reported Wheelchair Skills Test Questionnaire scores of new users of mobility scooters: a cross-sectional study

OBJECTIVES

To describe the subjective reported scooter-skill scores of new mobility scooter users and to identify significant correlations with other characteristics and measures.

MATERIALS AND METHODS

This was a single-centre study using a cross-sectional design. Participants (N = 22) completed the Wheelchair Skills Test-Questionnaire (WST-Q) Version 4.3 for scooter users. It measures the users' perceived capacity (what the user can do), performance (what the user actually does), and confidence (or self-efficacy). Their scooter skills were also rated objectively with the Wheelchair Skills Test (WST). They completed standardised measures of cognition, hearing, vision, life space mobility, visual attention and task switching, and confidence negotiating the social environment using their scooters.

RESULTS

Mean total WST-Q capacity scores were 83% and performance scores were 25%. WST-Q capacity scores had significant positive correlations with WST-Q performance (r = 0.321) and confidence scores (r = 0.787), WST capacity scores (r = 0.488), and confidence negotiating the social environment (WheelCon) (r = 0.463). WST-Q capacity scores were significantly negatively correlated with Trail Making B scores (r = -0.591) and age (r = -0.531).

CONCLUSIONS

The correlations between WST-Q scores and other variables are similar to those found in other studies among users of scooters and other mobility devices. The gap between capacity and performance scores highlights the needs for additional skills training in this population of novice scooter users.IMPLICATIONS FOR REHABILITATIONIn implementing scooter training for new scooter users, attention should be paid to building community-based skills for navigating both the physical and the social environment.Scooter users' age and their driving capabilities need to be taken into account when developing and delivering the training.

Rasch Analyses of the Wheelchair Use Confidence Scale for Power Wheelchair Users

OBJECTIVES

To examine the dimensionality of the Wheelchair Use Confidence Scale for power wheelchair users (WheelCon-P), to identify items that do not fit the Rasch rating scale model as well as redundant items for elimination, and to determine the SEMs and reliability estimates for the entire range of measurements.

DESIGN

Secondary analysis of cross-sectional data.

SETTING

Community.

PARTICIPANTS

Volunteer participants (N=189) using wheelchairs (mean age of the sample, 56.7±13.0y; mean years of wheelchair use experience, 20.4±16.4).

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASURES

59-Item WheelCon-P.

RESULTS

Principal component analyses confirmed the presence of 2 self-efficacy dimensions: mobility and social situation. Eleven mobility items and 5 social situation items fit the Rasch rating scale model. Three items misfit the model using all 16 items (ie, WheelCon-P short form). In each of the mobility, social situation, and WheelCon-P short form range of measurements, the 2 lowest and 2 highest measures had internal consistency reliability estimates below .70; all other measures had reliability estimates above .70.

CONCLUSIONS

The WheelCon-P is composed of 2 self-efficacy dimensions related to mobility and social situations. The scores from the WheelCon-P short form and the 11-item mobility and 5-item social situation dimensions using a 0 to 10 response scale have good reliability.