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Outline
To explore the mediating roles of sleep duration and depressive symptoms in the relationship between instrumental activities of daily living (IADL) and self-rated health (SRH) among older adults.
A total of 8 363 older adults (≥60 years) from the 2020 China Health and Retirement Longitudinal Study (CHARLS) were included. Spearman’s rank correlation analysis was employed to assess correlations among IADL, sleep duration, depressive symptoms, and SRH. Bootstrap analysis was used to examine the mediating effects of sleep duration and depressive symptoms on the association between IADL and SRH.
IADL exerted a significant direct effect on SRH (β=-0.074, 95% CI: -0.081~-0.066). Significant mediating effects were observed for sleep duration alone (β=-0.002, 95% CI: -0.003~-0.001), depressive symptoms alone (β=-0.029, 95% CI: -0.032~-0.001), and the chained pathway through sleep duration and depressive symptoms (β=-0.002, 95% CI: -0.003~-0.001).
IADL limitations may directly and negatively impact SRH in older adults, and may also indirectly affect SRH through the independent or sequential mediating effects of sleep duration and depressive symptoms.Interventions aimed at enhancing IADL capacity, optimizing sleep duration, and alleviating depressive symptoms could improve SRH and promote physical and mental well-being among older adults.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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