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To investigate the impact of omorbidities on sleep duration in middle-aged and elderly individuals in China.
This study was a cross-sectional analysis using data from the 2020 China health and retirement longitudinal study database to examine the relationship between comorbidities and sleep duration. Directed acyclic graphs were used to identify potential confounding factors. Overlap weighting and linear regression with double confounding adjustment were applied to minimize group differences and make inter-group comparisons more akin to a randomized trial. The impact of comorbidities on sleep duration was explored through linear regression, and sensitivity analyses were conducted to verify the robustness of the results, with subgroup analyses performed.
A total of 17 010 participants aged 45 years and older were included in the analysis. The results indicated that comorbidities affected individual sleep duration. Individuals with multimorbidity had a sleep duration that was approximately 0.12 hours shorter compared with those without multimorbidity (B=-0.121 4, P<0.05). Sensitivity analysis showed an E-value of 1.48. Furthermore, this impact was more pronounced in females (B=-0.159 4, P<0.05) and in the middle-aged group (45-60 years) (B=-0.225 8, P<0.05).
There is a difference in sleep duration between middle-aged and elderly individuals with chronic disease comorbidity, with a more pronounced effect observed in females and the middle-aged group. The study utilizes overlap weighting, demonstrating the significant impact of comorbidities on sleep duration, providing empirical evidence for improving sleep conditions in this population.
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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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