Evaluating the Measurement Properties of the ScanCourse, a Dual-Task Assessment of Visual Scanning-Reference-Cited by-同舟云学术

Evaluating the Measurement Properties of the ScanCourse, a Dual-Task Assessment of Visual Scanning

Published:2019-01-01 Issue:1 Volume:74 Page:7401185040p1-7401185040p7
ISSN:0272-9490
Container-title:The American Journal of Occupational Therapy
language:en
Short-container-title:

Author:

Lund Paige¹,Moir Caitlyn²,Kristalovich Lisa³,Ben Mortenson W.⁴

Affiliation:

1. Paige Lund, BSc, MOT, is Occupational Therapist, Family Resource Association, Parksville, British Columbia, Canada.

2. Caitlyn Moir, BA, MOT, is Occupational Therapist, Vancouver Coastal Health Authority, Vancouver, British Columbia, Canada.

3. Lisa Kristalovich, BMR (OT), MRSc, is Clinical Faculty, Department of Occupational Science and Occupational Therapy, University of British Columbia, Vancouver, British Columbia, Canada, and Occupational Therapist, Vancouver Coastal Health Authority, Vancouver, British Columbia, Canada.

4. W. Ben Mortenson, BScOT, MSc, PhD, is Associate Professor, Department of Occupational Science and Occupational Therapy, University of British Columbia, Vancouver, British Columbia, Canada; Principal Investigator, Rehabilitation Research Program, Vancouver Coastal Health Research Institute (VCHRI), Vancouver, British Columbia, Canada; and Principal Investigator, International Collaboration on Repa

Abstract

Abstract Importance: The ScanCourse is used by occupational therapists to evaluate visual scanning ability during locomotion. Its measurement properties have not been examined. Objective: To assess the interrater reliability, test–retest reliability, and construct validity of the ScanCourse. Design: This study involved data collection at two time points. To assess test–retest reliability, the ScanCourse was administered twice within a 2-week period. To assess interrater reliability, a second rater was present for one session. To assess level of agreement, a Bland–Altman plot was created. To assess absolute reliability, the standard error of measurement was calculated. To evaluate construct validity, the results of the ScanCourse were compared with results of the Bells Test and Trail Making Test A and B. Setting: Rehabilitation hospital. Participants: Forty-one patients with neurological impairments. Outcomes and Measures: The ScanCourse (participants identify numbered cards placed on both sides of a hallway at various heights during locomotion). Results: The ScanCourse was found to have excellent interrater reliability (intraclass correlation coefficient [ICC] [1,1] = .998; 95% confidence interval [CI] [.996–.999]), test–retest reliability (ICC [1,1] = .912; 95% CI [.811–.959]), a high level of agreement, and a low standard error of measurement (.503), and it was found to be significantly correlated with Trails A (rs = −.436, p = .009) and B (rs = −.364, p = .029). Conclusions and Relevance: The assessment was found to have strong measurement properties, and it is therefore an appropriate tool for assessing dual-task visual scanning among those with neurological impairments. What This Article Adds: This research demonstrates that the ScanCourse is reliable between raters and over time and that scores on the measure vary as anticipated with scores on a related measure, which provides evidence of its validity. These findings support its use in practice.

Publisher

AOTA Press

Subject

Occupational Therapy

Link

https://research.aota.org/ajot/article-pdf/74/1/7401185040p1/70303/7401185040p1.pdf