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| The chain mediating role of sleep quality and subjective cognitive decline in the reduction of quality of life among elderly individuals with blood-stasis constitution |
| Hits 172 Download times 20 Received:November 17, 2025 |
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| DOI
10.11656/j.issn.1672-1519.2026.03.03 |
| Key Words
blood stasis;quality of life;subjective cognitive decline;sleep quality;chain mediation effect |
| Author Name | Affiliation | E-mail | | JIA Jiameng | School of Management, Beijing University of Chinese Medicine, Beijing 102488, China | | | ZHU Yanbo | School of Management, Beijing University of Chinese Medicine, Beijing 102488, China
School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, China | yanbo0722@sina.com |
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| Abstract
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| [Objective] To explore the chain mediating effect of sleep quality and subjective cognitive decline between blood stasis and quality of life in the elderly，so as to provide reference for delaying subjective cognitive decline and improving quality of life in the elderly. [Methods] From January to November 2024，a convenience sampling method was adopted to conduct a questionnaire survey among the elderly aged 60 and above in Beijing，Shandong，Hunan，Sichuan，Chongqing and other places. A total of 703 samples were included for analysis. The degree of blood stasis constitution bias was evaluated using of the 41-item Constitution in Chinese Medicine Questionnaire（CCMQ-41），the quality of life was assessed by the Short Form 36 Health Survey（SF-36 v2），subjective cognitive decline was evaluated by the Chinese version of the Subjective Cognitive Decline Questionnaire 9（SCD-Q9），and sleep quality was evaluated by the Pittsburgh Sleep Quality Index（PSQI）. Pearson correlation analysis was used to explore the correlations among the variables，and the Process 3.5 plugin model 6 of SPSS 26.0 was used for chain mediation effect analysis. [Results] 1） The scores of blood stasis constitution，sleep quality，subjective cognitive decline and quality of life of 703 elderly people were （23.71±15.11） points，（6.20±3.85） points，（4.70±2.43） points and （80.12±14.52） points，respectively. 2） Correlation analysis showed that blood stasis constitution was positively correlated with sleep quality score（r=0.267，P<0.05） and subjective cognitive decline（r=0.458，P<0.05），and negatively correlated with quality of life（r=-0.435，P<0.05）；sleep quality score was positively correlated with subjective cognitive decline（r=0.281，P<0.05），and negatively correlated with quality of life（r=-0.336，P<0.05）；subjective cognitive decline was negatively correlated with quality of life（r=-0.394，P<0.05）. 3） The results of the mediation effect showed that the direct effect of blood stasis constitution on the quality of life of the elderly was significant（effect value -0.286，95%CI=-0.358 to -0.214），accounting for 65.75% of the total effect（-0.286/-0.435）；the independent mediating effect of sleep quality was significant（effect value -0.054，95%CI=-0.081 to -0.031），accounting for 12.41% of the total effect（-0.054/-0.435）；the independent mediating effect of subjective cognitive decline was significant（effect value -0.085，95%CI=-0.117 to -0.055），accounting for 19.54% of the total effect（-0.085/ -0.435）；the chain mediating effect of sleep quality and subjective cognitive decline was significant（effect value -0.010，95%CI= -0.016 to -0.005），accounting for 2.30% of the total effect（-0.010/-0.435）. [Conclusion] Blood stasis can not only directly negatively affect the quality of life of the elderly，but also indirectly affect the quality of life of the elderly through the independent mediating and chain mediating effects of sleep quality and subjective cognitive decline. Prompting the elderly to regulate blood stasis constitution，improve sleep，and engage in early identification and intervention of subjective cognitive decline in daily life can enhance their quality of life. |
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