Key result
Poor sleep quality is linked to falls in older adults, partially mediated by depressive symptoms.
Why the study?
Although sleep quality is known to be associated with falls, whether depressive symptoms mediate this relationship remained to be examined.
Does poor sleep quality increase the risk of falls in older adults, and is this mediated by depressive symptoms?
Observational (n=4,579)
Does poor sleep quality increase the risk of falls in older adults, and is this mediated by depressive symptoms?
Depressive symptoms partially mediate the relationship between poor sleep quality and increased risk of falls in older adults.
Answers are grounded in this paper and cite their sources.
Supports targeted depression assessment among older adults with poor sleep to address falls; hypothesis-generating and requires longitudinal confirmation.
Objectives: It is well known that sleep quality was associated with falls. This study aimed to examine whether the presence of depressive symptoms mediate the association of self-reported sleep quality with falls.Methods: Data of community-based study including 4,579 adults aged 60 years or older were analyzed. Information regarding sleep quality and falls was self-reported by participants using pre-designed questionnaires. The nine-item Patient Health Questionnaire (PHQ-9) without the sleep item was used to assess the presence of depressive symptoms. A bootstrapping approach was performed to explore whether the relationship between self-reported sleep quality and falls was partially mediated by depressive symptoms. The mediator was considered significant if the 95% confidence interval (CI) did not include 0.Results: Older adults with poor sleep quality had higher odds of falls than their counterparts with normal sleep. In the equation regressed falls on self-reported sleep quality and PHQ-9 score, the association between self-reported sleep quality and falls disappeared. Depressive symptoms partially mediated the association between self-reported sleep quality and falls based on the significance of indirect effect (β = 0.15, 95% bootstrap CI = 0.08, 0.22).Conclusions: The presence of depressive symptoms might partially mediate the association of self-reported sleep quality with falls among older adults.
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Liu et al. (2020) conducted an observational in Falls (n=4,579). Poor sleep quality vs. Normal sleep was evaluated on Mediation of the association between sleep quality and falls by depressive symptoms (β 0.15, 95% CI 0.08-0.22). Depressive symptoms partially mediated the association between self-reported poor sleep quality and falls among older adults (indirect effect β = 0.15; 95% CI 0.08-0.22).
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