軽度アルツハイマー病者に対する遂行機能評価としての片付け検査の妥当性—BADSとの比較から

Validity of a Clearing up Test as a functional assessment of executive functions for patients with mild Alzheimer's disease : A comparison with BADS

要旨：軽度アルツハイマー病（以下，AD）者の遂行機能評価手段を検討するために，7種類の片付け作業課題で構成された片付け検査と，遂行機能障害症候群の行動評価法日本版（BADS）を，軽度AD者10名（AD群）と非認知症（以下，ND）者10名（ND群）に実施した．片付け検査を得点化し信頼性と妥当性について検討したところ，片付け検査は遂行機能評価の一手段になりうると考えた．また軽度AD者には，片付け検査の方がBADSより難易度が適していることが示唆された．しかし，片付け検査下位項目の「片付け検査開始から課題に取りかかるまでの時間」，「確認行動」において両群で有意差がなく，この項目はAD者には適さないことが考えられた．

　A Clearing up Test consisting of 7 types of clearing up tasks and a Behavioral Assessment of the Dysexecutive Syndrome (BADS) were conducted on 2 groups that were classified on the basis of the Mini Mental State Examination (MMSE): 10 subjects with mild Alzheimer's disease (AD group) and 10 subjects with Non-dementia (ND group). The reliability and relevance of these criteria for evaluation were examined. The results revealed that the Clearing up Test could potentially be a means of assessment of executive functions. In addition, it was indicated that the Clearing up Test was better suited for subjects with mild AD than BADS. However, in terms of the subcategories of the Clearing up Test, namely "checking behavior" and the "elapsed time from the commencement of the Clearing up Test until the beginning of the task," there was no significant difference between the 2 groups; thus, this criteria may not be suitable for the evaluation of AD patients.