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To explore the influence of socioeconomic status on cognitive level and the longitudinal mediating role of loneliness and social participation among the elderly.
A total of 2 060 research samples were included in the 2011, 2014 and 2018 longitudinal data of the China Elderly Health Influencing Factors Longitudinal Survey (CLHLS), and the data were analyzed using cross-lagged mediation model.
There was a positive correlation between the pre-test socioeconomic status and the post-test cognitive level of the elderly, and the association was statistically significant （β=1.048, P<0.001）. The results of 95% of the bootstrap mediating effect test showed that the longitudinal mediating effect of loneliness in the elderly between socioeconomic status and cognition was insignificant -0.004 （-0.012-0.004）. The socioeconomic status of the elderly indirectly positively affected the cognitive level by positively affecting social participation 0.022 （0.009-0.036）, and the mediating effect was 33.06%. The longitudinal chain mediating effect between loneliness and social participation between socioeconomic status and cognition was significantly 0.010（0.002-0.019）, and the mediating effect was 21.03%.
The socioeconomic status of the elderly affects the cognitive level, the social participation of the elderly is the mediating variable of the socioeconomic status affecting the cognitive level,and there is a chain mediating effect between economic status and cognitive level in the elderly's loneliness and social participation. In the future prevention of cognitive dysfunction in older adults, special attention should be paid to the impact of socioeconomic status loneliness, and social participation.
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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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