Cost Analyses in Assistive Technology Research

Scoping review of economic evaluations of assistive technology globally

The paper presents a scoping review of existing economic evaluations of assistive technology (AT). The study methodology utilized a PRISMA flow approach with final included studies that met an adapted PICOS framework. Types of economic evaluations employed, study type and rigor and domains of AT impact were considered and analyzed. The economic evaluations in this study included 13 CBA, 9 CMA, 18 CEAs and 10 CUA. The majority of studies (32 studies in total) mentioned or recorded that AT investment, access and/or usage had impacts on the domain of both informal and formal health care. Specifically, care costs, time, and resources were affected. Our study has found that current AT economic evaluations are limited. This study advocates for a wider use of robust alternative evaluation and appraisal methodologies that can highlight AT value and which would subsequently provide further evidence that may make governments more willing to invest in and shape AT markets.

A research-based strategy for managing housing adaptations: study protocol for a quasi-experimental trial

BACKGROUND

The primary aim of this paper is to describe the design of a project evaluating the effects of using a research-based strategy for managing housing adaptations (HAs). The evaluation targets clients' perspectives in terms of activity, participation, usability, fear of falling, fall incidence, use of mobility devices, and health-related quality of life, and determines the societal effects of HAs in terms of costs. Additional aims of the project are to explore and describe this strategy in relation to experiences and expectations (a) among clients and cohabitants and (b) occupational therapists in ordinary practice.

METHODS/DESIGN

This study is a quasi-experimental trial applying a multiphase design, combining quantitative and qualitative data. At the experimental sites, the occupational therapists (OTs) apply the intervention, i.e. a standardized research-based strategy for HA case management. At the control site, the occupational therapists are following their regular routine in relation to HA. Three municipalities in south Sweden will be included based on their population, their geographical dispersion, and their similar organizational structures for HA administration. Identical data on outcomes is being collected at all the sites at the same four time points: before the HA and then 3, 6, and 12 months after the HA. The data-collection methods are semi-structured qualitative interviews, observations, clinical assessments, and certificates related to each client's HA.

DISCUSSION

The intervention in this study has been developed and tested through many years of research and in collaboration with practitioners. This process includes methodological development and testing research aimed at identifying the most important outcomes and research targeting current HA case-management procedures in Swedish municipalities. When the study is completed, the results will be used for further optimization of the practice strategy for HA, in close collaboration with the data-collecting OTs.

TRIAL REGISTRATION

No: NCT01960582.

Consumer perspectives on assistive technology outcomes

PURPOSE

The current study explored domains of assistive technology (AT) device outcomes that are most valued by AT users. A secondary objective was to identify elements in the device acquisition process that affect outcomes.

METHOD

Focus groups were conducted at geographically dispersed locations within the USA. The groups were moderated by experienced AT practitioners who followed a detailed procedure emphasizing a nominal group facilitation technique.

RESULTS

Twenty-four adult AT users, representing a range of ages and disability populations, participated in four focus groups. Many had over 15 years of experience with multiple device types. Qualitative analysis yielded 13 threads that embodied salient outcome domains (e.g. independence, subjective well-being, participation in work and school, cost-effectiveness) and key factors associated with the device acquisition process (e.g. lengthy periods of frustration, variable quality of service providers). Ironically, these data were evoked only after the term "outcomes" was omitted from focus group questions.

CONCLUSIONS

AT outcomes studies are needed that report data regarding (a) the impact of AT on participation, (b) costs of AT provision and (c) key elements in the AT service delivery process. Future studies will be further strengthened to the extent that their methodologies actively assimilate consumer perspectives. Implications for Rehabilitation Consumers highly value the impact of AT devices on their independence, subjective well-being and participation in work and school. The process of acquiring assistive technology devices is often lengthy and frustrating for consumers. Future AT outcomes research should report descriptive data regarding service delivery processes, as well as long-term impacts for consumers. Practitioners and researchers should avoid the use of potentially confusing professional jargon when administering surveys to consumers.

Assessing the efficacy, effectiveness, and cost-effectiveness of assistive technology interventions for enhancing mobility

PURPOSE

The aim of this paper is to highlight the contributions that complementary efficacy, effectiveness, and cost-effectiveness studies can make to assessing the outcomes of assistive technology interventions for enhancing mobility.

METHOD

The terms, 'assistive technology outcomes research' and 'assistive technology interventions', are defined. Several bases are examined for the shortage of outcomes research pertaining to mobility-related assistive technology interventions. Three presuppositions are described for the research strategy of interlocking studies being recommended. They are assigning priority to evaluating both recently developed assistive technologies and ones that have long been available, acknowledging the complexity of assistive technology as an intervention, and appreciating the trade-offs necessary for strengthening studies' internal and external validity. Some key study preparations are considered, including treatment theory, treatment specification, and the selection of outcome domains and measures. The essential features of efficacy, effectiveness, and cost-effectiveness studies are outlined, and their interdependence is stressed.

RESULTS AND CONCLUSIONS

To assess the outcomes of assistive technology interventions for mobility in ways that are both methodologically sound and relevant to stakeholder needs, a research strategy is required involving mutually reinforcing efficacy, effectiveness, and cost-effectiveness studies. Collaborative arrangements and funding methods are discussed for fostering the needed research.

Using the ICF in economic analyses of Assistive Technology systems: methodological implications of a user standpoint

PURPOSE

This paper identifies key methodological issues for economic analyses of costs and effectiveness of Assistive Technology (AT) systems based on the International Classification of Functioning, Disability and Health (ICF). Following the biopsychosocial model of the ICF, the paper explores the consequences for cost-effectiveness analyses of AT systems when a user centred approach is taken. In so doing, the paper questions the fiction of neutrality in economic analyses and discusses the distinction between weak and strong objectivity.

METHOD

Costs are measured as all resources used when providing a particular level of environmental facilitators and reducing environmental barriers for an AT user, while effectiveness is measured in terms of the resulting increase in activities and participation of the AT user. The ICF's fourth qualifier for activities and participation, which denotes performance without assistance is used to identify the additional performance achieved due to the particular environmental factors in the current situation (first qualifier). A fifth qualifier for activities and participation is introduced to denote performance with optimal assistance, and the fourth qualifier is then again used to identify the increase in activities and participation due to the environmental factors in the situation with optimal assistance.

RESULTS

The effectiveness that an AT user achieves in his or her current situation can be compared with the effectiveness he or she could achieve when provided with what is considered an optimal AT system based on current technologies and user priorities. This comparison throws into sharp relief the role of AT systems as well as of universal design (UD) in reducing environmental barriers for AT users in a way that is cost-effective for society as a whole.

CONCLUSION

Cost-effectiveness analysis based on the ICF can provide powerful economic evidence for how best to allocate existing funding for AT systems. We can identify three particular scenarios in which clear recommendations can be made. In addition, cost-effectiveness analysis provides a means to identify how society can comply with its obligation towards all its members in the most cost-effective way, using a combination of AT and UD.

Toward a Taxonomy of Assistive Technology Device Outcomes

The advancement of assistive technology device (ATD) outcomes research requires a substantive taxonomy for ATD outcomes. This article describes the assumptions and principles that should underlie such a taxonomy. It advocates for an approach to classifying outcomes that would promote consistency in how ATDs are distinguished, based on their intended effect on the user. The approach is designed to accommodate the widest variety of ATD applications, reflecting combinations of user population, ATD type, service, and context for use. In essence, the provisional taxonomy proposes that ATD outcomes can be effectively operationalized from three vantages--effectiveness, social significance, and subjective well-being. It emphasizes a distinction between the proximal effect of ATDs and the more distal outcomes associated with their use. Because it promotes consistency in the language used for categorizing outcomes, the taxonomic approach should facilitate the development of ATD-specific causal models. The utility of a taxonomy in ATD outcomes research is discussed.