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Rehab Measures: Assistive Technology Device Predisposition Assessment

Link to instrument

Information can be found on the publisher's website 

Title of Assessment

Assistive Technology Device Predisposition Assessment 

Acronym

ATD-PA

Instrument Reviewer(s)

Summary Date

 

Purpose

A subjective measure assessing one's perceived quality of life

Description

The ATD-PA consists of two forms:
  • The Person Form consists of 54 items across three domains:
    • Section A (9 items): The patients ratings of functional abilities (5-point Likert scale)
    • Section B (12 items): quality of life / subjective well-being in the context of the World Health
      Organization’s International Classification of Functioning, Disability and Health (ICF) domains of Activity and Participation (5-point Likert scale)
    • Section C (33 items): The patients personal and psychosocial characteristics comprised of eight sub scales:
      • Mood
      • Self-Esteem
      • Self-determination
      • Autonomy
      • Family Support
      • Friend Support
      • Therapist and Program Reliance
      • Motivation to Use Support
  • The Device Form includes 12 items asking patients to assess their predisposition in using a particular Assistive Technology
  • A score of 60 is interpreted to mean that the patient expects to experience maximum benefit from the use of an Assitive Technology

Area of Assessment

Activities of Daily Living; Functional Mobility; Life Participation; Quality of Life 

Body Part

Not Applicable 

ICF Domain

Participation 

Domain

ADL 

Assessment Type

Patient Reported Outcomes 

Length of Test

06 to 30 Minutes; 60 Minutes or More 

Time to Administer

May take an hour or longer to administer

Number of Items

66 

Equipment Required

Computer (needed to administer the assessment)

Training Required

Training manual

Type of training required

Reading an Article/Manual 

Cost

Not Free 

Actual Cost

$89.95 and is available on the publisher's website

Age Range

Adolescent: 13-17 years; Adult: 18-64 years; Elderly adult: 65+ 

Administration Mode

Computer 

Diagnosis

Acquired Brain Injury; Cerebral Palsy; Geriatrics; Lower Limb Amputation; Movement Disorders; Multiple Sclerosis; Parkinson’s disease; Spinal Cord Injury; Stroke 

Populations Tested

  • Any diagnosis that results in a patient's need for an assistive technology

Standard Error of Measurement (SEM)

Not Established

Minimal Detectable Change (MDC)

Not Established

Minimally Clinically Important Difference (MCID)

Not Established

Cut-Off Scores

Not Established

Normative Data

Acute SCI: (Scherer et al, 2001; n = 20; mean age = 51.05 (16.44) years; 13 = paraplegia (4 complete), 7 = tetraplegia (1 complete))

 
ATD PA Sections B and C
Item

Mean (SD)

10
3.15 (1.14)
11
4.10 (0.85)
12
2.95 (1.10)
13
3.25 (1.12)
14

3.20 (1.15)

15
2.50 (1.32)
16
3.05 (1.32)
17

3.00 (1.30)

18
3.55 (1.10)
19
1.75 (1.21)
20
1.95 (1.47)
 
 
Vocational Rehabilitation (Scherer et al, 2005; n = 159; done as part of a training program; patients were either drawn from the students case-load or were friends of the student; respondents reported functional limitations in mobility, upper and lower extremity control, eyesight, hearing, and speech communication issues)
 
Normative Data Across Various Diagnosis::
 

Age

Gender

Cohort

n

Mean
S.D.
Range
Male
Female
2002

91

37.59
14.40
17 – 75
41
33
2004

68

38.09
15.40
17 – 77
20
37

Test-retest Reliability

Vocational Rehabilitation (Scherer et al, 2005)
 
Internal Consistency Across ATD-PA Domains:
Domain

Items

2002
2004
QOL

12

0.89
0.88
Family Support

11

0.80
0.81
Motivation for AT Use

14

0.82
0.83
Self-Determination

14

0.82
0.84
Therapist-Program Reliance

12

0.81

0.73

Mood

15

0.82
0.85
Friend Support

12

0.80
0.81
Autonomy

13

0.80
0.76
Self-Esteem

13

0.80

0.83

Interrater/Intrarater Reliability

Not Established

Internal Consistency

Vocational Rehabilitation: (Scherer et al, 2005)
 
Internal Consistency Across ATD-PA Domains:
Domain

Items

Strength
2002
Strength
2004
QOL

12

Excellent
0.89
Excellent
0.88
Family Support

11

Excellent
0.80
Excellent
0.81
Motivation for AT Use

14

Excellent
0.82
Excellent
0.83
Self-Determination

14

Excellent
0.82
Excellent
0.84
Therapist-Program Reliance

12

Excellent
0.81
Adequate

0.73

Mood

15

Excellent
0.82
Excellent
0.85
Friend Support

12

Excellent
0.80
Excellent
0.81
Autonomy

13

Excellent
0.80
Adequate
0.76
Self-Esteem

13

Excellent

0.80

Excellent

0.83

Cronbach’s alpha

Criterion Validity (Predictive/Concurrent)

Vocational Rehabilitation: (Scherer et al, 2005)
 
Participants were asked 3 to 4 months after their first assessment to rate how well the selected Assisitve Technology (AT) matched their needs. On a 10 point scale participants in the 2002 cohort gave a mean rating of 6.2, while the 2004 cohort reported a mean rating of 8.1. These results provide preliminary support for the measure's ability to predict how well an AT matches the needs and preferences of participants.

Construct Validity (Convergent/Discriminant)

Acute SCI: (Scherer et al, 2001)
 
Correlations Between Measure of Quality of Life:
Variable
BSIdep
SWLS-total
ATD-PA QOL Items
BSIdep
1.00
SWLS-total
- 0.64**
1.00
QOL-total
- 0.71**
0.89**
1.00
** p < 0.01.
Brief Symptom Inventory=  BSIdep
Satisfaction with Life Scale = SWLS-total
ATD-PA (Sections B and C)

Content Validity

The ATD PA was developed by incorporating the experiences of technology users and non-users providing evidence of content validity

Face Validity

The ATD-PA was developed with the imput of users of Assistive Devices!

Floor/Ceiling Effects

Not Established

Responsiveness

Not Established

Professional Association Recommendations

Considerations

  • Translation available
    • English: North America
    • English: Ireland
    • French
    • Italian
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Bibliography

Scherer, M. J. (2005). "Assessing the benefits of using assistive technologies and other supports for thinking, remembering and learning." Disabil Rehabil 27(13): 731-739. Find it on PubMed

Scherer, M. J. and Cushman, L. A. (2001). "Measuring subjective quality of life following spinal cord injury: a validation study of the assistive technology device predisposition assessment." Disabil Rehabil 23(9): 387-393. Find it on PubMed

Scherer, M. J. and Cushman, L. A. (2002). "Determining the content for an interactive training programme and interpretive guidelines for the Assistive Technology Device Predisposition Assessment." Disabil Rehabil 24(1-3): 126-130. Find it on PubMed 

Year published

2001 

Instrument in PDF Format

Yes 
Approval Status Approved 
 
Attachments
Created at 5/26/2011 3:04 PM  by Jason Raad 
Last modified at 12/11/2013 1:00 PM  by Jason Raad