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To understand the successful aging rate of middle-aged and elderly people in China， to explore the association between sleep duration and successful aging of middle-aged and elderly people in China，and to provide reference for promoting the health and quality of life of middle-aged and elderly people.
Utilizing data from the China Health and Retirement Longitudinal Study (CHARLS)， a longitudinal study was conducted to analyze sleep duration， successful aging scores and successful aging rates among individuals aged 45 and above from 2011 to 2020. Generalized estimating equations were used to examine the associations of naptime sleep duration，nighttime sleep duration and total sleep duration with successful aging scores in middle-aged and older adults.
The successful aging rates were 4.26%，16.82%，11.62%，10.08%，and 16.47% in 2011，2013，2015，2018，and 2020，respectively. Nighttime sleep duration (β1=0.377，P<0.001; β2=-0.023，P<0.001) and total sleep duration (β1=0.345，P<0.001；β2=-0.020，P<0.001) showed inverted U-shaped associations with successful aging in China’s middle-aged and elderly. Naptime duration and successful aging showed an inverted U-shaped association in the middle-aged population aged 45-59 years (β1=0.083，P=0.008; β2=-0.042，P<0.001)， and a linear association in the elderly population aged 60 years and above (β1=0.074，P=0.011).
Maintaining a moderate length of sleep is conducive to the development of successful aging in China middle-aged and older adults，and either too short or too long a sleep period may have a detrimental effect on middle-aged and 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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