Article

OBJECTIVES: To examine the test-retest reliability, calculate minimal detectable
change (MDC), and report internal consistency of the Test of Visual Perceptual
Skills-Third Edition (TVPS-3) in patients with stroke. DESIGN: Repeated-measures
design (at an interval of 2wk). SETTING: Medical center. PARTICIPANTS: Patients
(N=50) with chronic stroke who completed the TVPS-3. INTERVENTIONS: Not
applicable. MAIN OUTCOME MEASURES: TVPS-3 that contains 7 subscales, namely,
visual discrimination, visual memory, spatial relations, form constancy,
sequential memory, visual figure-ground, and visual closure. RESULTS: The
intraclass correlation coefficient value of the overall scale was .92 and those
of the 7 subscales were .53 to .82. The MDC values of the overall scale and the
subscales were 18.1 and 5.4 to 7.1, respectively. The MDC% value of the overall
scale was 16.2% (<30%), showing acceptable random measurement error. However, the
MDC% values of the subscales were 33.7% to 44.1% (>30%), indicating substantial
random measurement errors. The Cronbach alpha of the 7 subscales were .71 to .89,
indicating good internal consistency. CONCLUSIONS: Our results showed that the
overall scale of the TVPS-3 had satisfactory test-retest reliability. However,
the subscales demonstrated insufficient test-retest reliability. Therefore, the
subscales should be used cautiously to explain the test results over repeated
assessments in patients with stroke.
CI - Copyright (c) 2016 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS