The mediating role of daily living ability and sleep in depression and cognitive function based on a structural equation model

This study found that depression symptoms in the older adults was significantly related to cognitive function. Older adults with depression symptoms are more likely to have cognitive impairment. In addition, poor sleep quality and the ability of daily living can play a mediating role between depression and cognition. In the future, the society should pay attention to the mental health of the elderly to avoid depression. They should also pay attention to the impact of their sleep quality and daily activity ability, so as to better maintain cognitive function.