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To examine the relationship between the increase in chronic diseases, self-rated health, and depressive tendencies among middle-aged and older adults in China.
Using data from the 2015 and 2018 waves of CHARLS, this study investigated the mediating role of self-rated health and depressive tendencies in the relationship between the increase in chronic diseases among 12 637 Chinese adults aged 45 and above. The mediation analysis was conducted using the PROCESS 4.0 program and validated through the Bootstrap method.
The prevalence of depressive tendencies among Chinese adults aged 45 and above was 37.11%. After controlling for relevant variables, the increase in chronic diseases significantly impacted both self-rated health and depressive tendencies (c value: t = 30.984, P<0.001; a value: t=17.072, P<0.001). When self-rated health was introduced as a variable, both the increase in chronic diseases and self-rated health significantly affected depressive tendencies (c’ value: t=8.915, P<0.001; b value: t=30.629, P<0.001). Self-rated health partially mediated the relationship between the increase in chronic diseases and depressive tendencies, with the highest effect proportion of 47.74%.
The increase in chronic diseases among middle-aged and older adults can influence depressive tendencies through self-rated health. To reduce depressive tendencies in these patients, it is essential to effectively improve their self-rated health.
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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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