脳血管障害者における実車評価の運転適性と運転行動との関連性

Relationship between fit-to-drive and driving behaviors on road assessment for stroke patients

要旨：本研究では，実車評価時の運転可否結果と具体的な運転行動の関連性について，神経心理学的に分析を行った．当センターで，自動車教習所における実車評価を実施した脳血管障害者の運転適性について，群間比較を行った．結果，神経心理学的検査に有意な差は認められず，危険であると評価された運転行動の合計数のみが有意差を認め，適性なし群で有意に多かった（p＝0.007）．運転適性との関連から，カーブ走行時の走行位置，進路変更時の合図の有無，後退時のコースのとり方が運転可否結果に影響しており，実車評価時に着目すべき運転行動が明らかになった．運転行動は，神経心理学的検査のみではとらえにくい，複雑な活動であることが示唆された．

　This research analyzed relationship of the characteristics of concrete driving behaviors to the comprehensive evaluation results of on road assessment using neuropsychological examination analysis, and clarified salient driving behaviors during on road assessment. Comparisons among groups revealed no significant differences in the neuropsychological test results in driving suitability. The total number of driving behaviors that were evaluated as dangerous was the only significant difference, and the numbers in the unfit to drive group were significantly more than in the fit to drive group (p=0.007). Regarding specific driving behaviors and driving suitability, it was clear that the driving position at the time of turning, the existence of the signal at the time of course change, and the course direction at the time of backward movement affected the comprehensive evaluation results. There was no association between neuropsychological tests and driving behavior. This study suggests that driving behavior is a complicated activity which is difficult to judge from neuropsychological tests.