Impact Study on Users of Upper Limb Assistive Devices

This scale consists of 26 items, each rated from -3 to 3. Each item is a word or phrase attempting to describe how the use of an assistive device may influence the user. A score of -3 indicates that the assistive device decreases the aspect described by the item, whereas a score of 3 indicates that it increases it.

12-item questionnaire. Eight items assess the degree of satisfaction with the technology (weight, durability, fit, ease of use, dimensions, effectiveness, safety).

Four items assess the degree of satisfaction with the related services (provision procedure, professional services, follow-up, repair and maintenance).

Sources of dissatisfaction are also identified. Items are rated on a 5-level ordinal scale ranging from "not satisfied at all" to "very satisfied." Total scores are obtained by calculating the mean of the item scores. Sources of dissatisfaction are reported qualitatively.

Assessment at T1 only

The assessment is conducted in five steps:

• Identification of occupational performance problems (interview).
• Rating by the individual, on a 10-point ordinal scale, of the importance of the identified problems.

3 & 4. Selection by the client of the five most important problems to address, followed by self-evaluation, for each selected problem, of their current performance and their satisfaction with that performance, using 10-point ordinal scales.

• Re-evaluation by the individual, after the intervention, of their levels of performance and satisfaction related to the problems identified in Step 1 (rating).

The assessment results are recorded on a form provided in the kit. Part of the value of this measure lies in the difference between the scores obtained before the intervention and at the time of re-evaluation (Step 5).

The EuroQoL 5D (EQ-5D) is a standardized instrument used to measure health-related quality of life across five dimensions: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression.

The participant will be asked about the following aspects : the method of acquiring the device, the impact of this acquisition on their expenses, the financial assistance received for the acquisition, and the household income.

A first quantitative component will measure the level of acceptance of the device. For this purpose, we will use the following questionnaire :

• Usefulness, Satisfaction and Ease of Use (USE) questionnaire in its short version, composed of 17 items.
• 9 items from the extended Unified Theory of Acceptance and Use of Technology (UTAUT2).

This two questionnaires use a 5-point Likert scale: A respondent who checks "1" is in complete disagreement with the statement and "7" fully agrees with the statement. Their questions are formulated as first-person statements.

A second qualitative component will allow us to explore the implicit dimensions of device use. Its aim is to complement, illustrate, and characterize the acceptance data obtained quantitatively by accessing users' subjectivity and their lived experience with the device. This component consists of a semi-structured interview lasting approximately 60 minutes.

The following questionnaire presents a list of statements describing the usual condition of people who have the daily responsibility of caring for someone else.

The scale allows an assessment of this caregiving burden, ranging from mild to moderate to severe.

After each statement, the caregiver indicates whether they experience this condition:

0 = never

• = rarely
• = sometimes
• = quite often
• = almost all the time

A short version of the Usefulness, Satisfaction and Ease of Use (USE) questionnaire was adapted to be administered to caregiver-users. T

6 itemsfrom the extended Unified Theory of Acceptance and Use of Technology (UTAUT2).

5 items focusing on the patient-user's autonomy in relation to the use of the assistive device (installation, uninstallation, maintenance...).

Then, a semi-structured interview (lasting approximately 60 minutes) will be conducted to evaluate the effect of the patient-user's use of the device on the caregiver-user's support. Its objective is to understand the use of the upper-limb assistance device within a systemic perspective, taking into account its social impact on individual and collective dynamics.