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Validation of the Test of Visual Perceptual Skills-Third Edition in patients with stroke
En-Chi Chiu1, Min-Yuan Yu2, Wen-Chi Wu2
1a Department of Long-Term Care , National Taipei University of Nursing and Health Sciences , Taipei , Taiwan.
Purpose:
The Test of Visual Perceptual Skills-Third Edition (TVPS-3) with seven subscales has been used to assess visual perception in patients with stroke. The purpose of this study was to investigate ecological validity, convergent validity, and discriminative validity of the TVPS-3 in patients with stroke.
Methods:
One hundred patients were assessed with the TVPS-3, two measures of activities of daily living, and two cognitive measures. To examine ecological validity, we calculated correlations (Pearson's r) among the TVPS-3 and two measures of activities of daily living. To examine convergent validity, correlations (r) were estimated among the TVPS-3 and two cognitive measures. To examine discriminative validity, independent t-test was used to compare the two groups with different levels of disability and to detect whether there were statistically significant differences in the TVPS-3 between these groups.
Results:
The correlations were 0.21-0.48 among the TVPS-3 and two measures of activities of daily living. The correlations were 0.29-0.68 among the TVPS-3 and two cognitive measures. Between the two groups, the t-test results showed statistically significant difference (p < 0.05) for the overall scale and the five subscales of the TVPS-3.
Conclusions:
The TVPS-3 has acceptable convergent validity, ecological validity, and discriminative validity and is useful to assess the visual perception in patients with stroke. Implications for rehabilitation The Test of Visual Perceptual Skills-Third Edition is a motor free visual perception test, which is an adequate tool for use in patients with stroke. The Test of Visual Perceptual Skills-Third Edition showed acceptable ecological validity, convergent validity, and discriminative validity in patients with stroke.
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