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To investigate the impact of community environment on the trajectory of cognitive function among older adults in China, providing a reference for promoting the construction of age-friendly communities and actively addressing aging.
Based on the data from the China Longitudinal Aging Social Survey from 2014 to 2020, 4 269 elderly individuals were selected. A group-based trajectory model was applied to construct trajectories of cognitive function changes, and a multinomial unordered logistic regression model was used to analyze the relationship between community environment and trajectories of cognitive function.
Three groups of cognitive function trajectories were identified: “Low Decline Group” (21.06%), “Moderate Stable Group” (66.19%), and “High Stable Group” (12.75%). Taking the “low decline group” as the reference group, after controlling for individual basic characteristics and health characteristics, it was found that the higher the community environment score of the elderly, the more their trajectory tended to be in the “High Stable Group” (OR=1.10, 95%CI: 0.93-1.30; OR=1.41, 95%CI: 1.21-1.66), indicating that the community environment has a protective effect on the cognitive decline of the elderly. Stratified analysis showed that compared to females and the elderly living alone, the improvement of the community environment is more beneficial for males and the non-living alone elderly to slow down their cognitive decline.
There is heterogeneity in the cognitive function trajectories of the elderly, and the community environment affects the attribution of cognitive function trajectories. Optimizing the community environment for males and non-lonely elderly can significantly protect their cognitive function.
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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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