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[What is hidden behind the Baking Tray Task? Study of sensibility and specificity in right-hemispheric stroke
Juan Garcia-Fernandez1, Alberto Garcia-Molina2, Celeste Aparicio-Lopez1
1Institut de Neurorehabilitacio Guttmann-UAB, 08916 Badalona, Espana.
Introduction:
Tham and Tegner proposed the Baking Tray Task (BTT) as a fast simple assessment test for detecting spatial negligence. However, very few studies have examined its validity as a diagnostic test.
Aim:
To analyse the diagnostic validity of the BTT by measuring its specificity and sensitivity in a sample of subjects with right hemisphere strokes.
Subjects And Methods:
Forty-eight patients with right hemisphere vascular lesions were distributed in two groups (negligence group, n = 35; non-negligence group, n = 13) according to the scores obtained in a battery of visuospatial examination tests. The participants' performance on the BTT was compared with that of a healthy control group (n = 12).
Results:
The results showed a high level of sensitivity of the BTT, but low specificity. The performance on the BTT of eight of the 13 members of the non-negligence group was suggestive of negligence.
Conclusions:
The BTT has proved to be a sensitive test for the detection of spatial negligence. Yet, based on its low specificity, its use alone as a single diagnostic test is not recommended.
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