Age-stroke related dysfunction interaction associated with home discharge of stroke inpatients in the rehabilitation ward.

The purpose of this study was to investigate whether interactions exist among cognitive and physical functions and activities of daily living (ADL) associated with home discharge of stroke patients in the rehabilitation ward. The subjects were 231 patients with a first stroke. Age, gender, affected side, the stroke impairment assessment set, ADL and discharge destination were collected from the medical record. Using a decision tree, a combination of variables that might have an interaction effect associated with home discharge was extracted. The existence of an interaction between the extracted variables was confirmed by logistic regression analysis. A combination of total score of the stroke impairment assessment set (≤27 points) and age (>76.5 years) at admission was extracted from the decision tree. As a result of the logistic regression analysis, this interaction term was significantly associated with home discharge. The findings of the present study suggest that there is an interaction between age and stroke-related dysfunction related to home discharge. Stroke patients aged over 76.5 years with the stroke impairment assessment set score of 27 or less at admission to the rehabilitation ward may need rehabilitation program considering the difficulty of home discharge.