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Computerized Adaptive Testing System of Functional Assessment of Stroke
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Reliability and validity testing of the ASSIST functional performance index.

A D Fairman1,2, P Foschi Walko1, D Ding2

  • 1Department of Occupational Therapy, Johnson & Wales University, Providence, Rhode Island, USA.

Assistive Technology : the Official Journal of RESNA
|August 8, 2023
PubMed
Summary
This summary is machine-generated.

The ASSIST Functional Performance Index (AFPI) reliably measures needs for Mainstream Smart Home Technologies (MSHT) for persons with physical disabilities. This assistive technology tool shows good validity in assessing MSHT impact.

Keywords:
Assessmentmainstream smart home technologyoutcome measures

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Area of Science:

  • Assistive Technology
  • Rehabilitation Engineering
  • Disability Studies

Background:

  • Persons with physical disabilities (PwPD) can benefit from Mainstream Smart Home Technologies (MSHT) as Assistive Technology (AT).
  • A validated tool is needed to assess PwPD's needs for MSHT and measure the impact of AT service delivery models.
  • The ASSIST Functional Performance Index (AFPI) was developed to address this need.

Purpose of the Study:

  • To conduct reliability and validity testing of the AFPI for PwPD.
  • To evaluate the AFPI's utility as an assessment tool and outcome measure for MSHT.

Main Methods:

  • The AFPI, comprising 46 items across functional domains, was administered twice to 22 PwPD (median 4-day interval).
  • Test-retest reliability was assessed using the Intraclass Correlation Coefficient (ICC, 3.1).
  • Item analysis used weighted kappa coefficients; validity was examined by correlating AFPI scores with SCI-FI questionnaires.

Main Results:

  • The AFPI demonstrated moderate to substantial agreement across most items.
  • Good to very good test-retest reliability was found for overall AFPI scores.
  • The AFPI showed good to very good validity as an assessment and outcome measure for MSHT.

Conclusions:

  • The AFPI is a valid and reliable tool for assessing MSHT needs and impact in PwPD.
  • The AFPI can aid in recommending and evaluating MSHT interventions.
  • Further research with diverse populations is recommended to establish broader clinical utility.