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To explore the longitudinal correlation between cognitive function (CF) and activities of daily living (ADL) of the rural elderly in Guizhou province, and to provide theoretical basis for preventing and controlling health problems of the elderly.
The multi-stage cluster random sampling method was used to select the elderly aged 60 years and above from 12 villages in 2 counties(districts) of Guizhou Province as the research objects. In this study, 792 elderly people who participated in two surveys in 2019 (T1) and 2022 (T2) and were ≥60 years old at baseline with complete variable values were selected as survey subjects. The cross-lagged model was used to investigate the longitudinal relationship between cognitive function and ADL.
The cross-lagged model showed that T1 ADL could predict T2 cognitive function after controlling T1 cognitive function (β= -0.120, P<0.001). After controlling for T1 ADL, T1 cognitive function predicted T2 ADL (β= -0.099, P=0.005). In the study of the association between two dimensions of ADL and cognitive function, it was found that T1 IADL could predict T2 cognitive function after controlling for T1 cognitive function (β= -0.138, P<0.001). Similarly, after controlling T1 IADL, T1 cognitive function could predict T2 IADL (β= -0.124, P<0.001). But there was no predictive effect between BADL and cognitive function.
There is a longitudinal bidirectional correlation between cognitive function and activities of daily living of the rural elderly in Guizhou, only between IADL and cognitive function, suggesting that strengthening the monitoring and intervention of cognitive function of the elderly can help reducing the risk of the decline of IADL in the elderly, and strengthening the training of IADL plays an important role in delaying cognitive decline.
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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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