alexa The Shape Trail Test: application of a new variant of the Trail making test.
Neurology

Neurology

Journal of Alzheimers Disease & Parkinsonism

Author(s): Zhao Q, Guo Q, Li F, Zhou Y, Wang B, , Zhao Q, Guo Q, Li F, Zhou Y, Wang B,

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Abstract OBJECTIVE: The Trail making test (TMT) is culture-loaded because of reliance on the Latin alphabet, limiting its application in Eastern populations. The Shape Trail Test (STT) has been developed as a new variant. This study is to examine the applicability of the STT in a senile Chinese population and to evaluate its potential advantages and disadvantages. METHOD: A total of 2470 participants were recruited, including 1151 cognitively normal control (NC), 898 amnestic mild cognitive impairment (aMCI), and 421 mild Alzheimer disease (AD) patients. Besides the STT, the Mini mental state examination and a comprehensive neuropsychological battery involving memory, language, attention, executive function and visuospatial ability were administered to all the participants. In a subgroup of 100 NC and 50 AD patients, both the STT and the Color Trail Test (CTT) were performed. RESULTS: In NC, the time consumed for Part A and B (STT-A and STT-B) significantly correlated with age and negatively correlated with education (p<0.01). STT-A and B significantly differed among the AD, aMCI and NC. The number that successfully connected within one minute in Part B (STT-B-1 min) correlated well with STT-B (r = 0.71, p<0.01) and distinguished well among NC, aMCI and AD. In the receiver operating characteristic curve analysis, the AUCs (area under the curve) for STT-A, STT-B, and STT-B-1min in identifying AD were 0.698, 0.694 and 0.709, respectively. The STT correlated with the CTT, but the time for completion was longer. CONCLUSION: The TMT is a sensitive test of visual search and sequencing. The STT is a meaningful attempt to develop a "culture-fair" variant of the TMT in addition to the CTT.
This article was published in PLoS One and referenced in Journal of Alzheimers Disease & Parkinsonism

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