Indoor ventilation frequency and cognitive function among Chinese old adults: the multiple mediation effect of anxiety and self-rated health

Abstract Background China is experiencing an increasingly serious aging population. Cognitive function is an important factor and guarantee for the quality of life of older people. Therefore, to achieve healthy aging, this study aimed to examine the sequential multiple mediating effects of indoor ve...

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Main Authors: Lu Lin, Pingping He, Sihui Qiu, Xiaohui Qiu, Jiangping Chen
Format: Article
Language:English
Published: BMC 2025-01-01
Series:BMC Geriatrics
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Online Access:https://doi.org/10.1186/s12877-025-05713-2
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author Lu Lin
Pingping He
Sihui Qiu
Xiaohui Qiu
Jiangping Chen
author_facet Lu Lin
Pingping He
Sihui Qiu
Xiaohui Qiu
Jiangping Chen
author_sort Lu Lin
collection DOAJ
description Abstract Background China is experiencing an increasingly serious aging population. Cognitive function is an important factor and guarantee for the quality of life of older people. Therefore, to achieve healthy aging, this study aimed to examine the sequential multiple mediating effects of indoor ventilation frequency and cognitive function on anxiety and self-rated health in the Chinese older people population. Methods Using the 2018 China Longitudinal Health and Longevity Survey (CLHLS) dataset, we finally selected 10,372 Chinese seniors over the age of 65. First, we describe the basic socio-demographic information of the sample population. Second, Spearman correlation analysis was used to determine whether there was a correlation between indoor ventilation frequency, anxiety, self-rated health, and cognitive function among Chinese older people. Finally, the SPSS macro process program was used to complete the sequence multiple mediation analysis. Results Indoor ventilation frequency, anxiety, self-rated health and cognitive function were significantly correlated (p < 0.01). Indoor ventilation frequency not only has a direct positive impact on the cognitive function of older people (effect = 0.1427; Standard error = 0.0201; 95%CI: LL = 0.1034, UL = 0.1821), but also indirectly affected cognitive function through three pathways: independent mediation of anxiety (effect = 0.0078; Standard error = 0.0021; 95%CI: LL = 0.0041, UL = 0.0121), independent mediating effect of self-rated health (effect = 0.0154; Standard error = 0.0030; 95%CI: LL = 0.0098, UL = 0.0215), and the chain mediating effect between anxiety and self-rated health (effect = 0.0046; Standard error = 0.0009; 95%CI: LL = 0.0029, UL = 0.0065). Limitations All projects are self-reported and some results may be biased. In the future, it may be more inspiring to explore more detailed and specific effects of indoor air quality on cognitive function in older people. Conclusions Studies have shown that indoor ventilation frequency can improve cognitive function by reducing anxiety and improving self-rated health in older people Chinese. Encouraging older adults to increase the frequency of indoor ventilation will benefit their mental health and cognitive function.
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series BMC Geriatrics
spelling doaj-art-bbda7e3c8fd84e8daf35d889b4bbefa82025-02-02T12:41:48ZengBMCBMC Geriatrics1471-23182025-01-012511810.1186/s12877-025-05713-2Indoor ventilation frequency and cognitive function among Chinese old adults: the multiple mediation effect of anxiety and self-rated healthLu Lin0Pingping He1Sihui Qiu2Xiaohui Qiu3Jiangping Chen4School of Nursing, Health Science Center, Hunan Normal UniversitySchool of Nursing, Health Science Center, Hunan Normal UniversityNursing School, Medical College of Hengyang, University of South ChinaNursing School, Medical College of Hengyang, University of South ChinaNursing School, Medical College of Hengyang, University of South ChinaAbstract Background China is experiencing an increasingly serious aging population. Cognitive function is an important factor and guarantee for the quality of life of older people. Therefore, to achieve healthy aging, this study aimed to examine the sequential multiple mediating effects of indoor ventilation frequency and cognitive function on anxiety and self-rated health in the Chinese older people population. Methods Using the 2018 China Longitudinal Health and Longevity Survey (CLHLS) dataset, we finally selected 10,372 Chinese seniors over the age of 65. First, we describe the basic socio-demographic information of the sample population. Second, Spearman correlation analysis was used to determine whether there was a correlation between indoor ventilation frequency, anxiety, self-rated health, and cognitive function among Chinese older people. Finally, the SPSS macro process program was used to complete the sequence multiple mediation analysis. Results Indoor ventilation frequency, anxiety, self-rated health and cognitive function were significantly correlated (p < 0.01). Indoor ventilation frequency not only has a direct positive impact on the cognitive function of older people (effect = 0.1427; Standard error = 0.0201; 95%CI: LL = 0.1034, UL = 0.1821), but also indirectly affected cognitive function through three pathways: independent mediation of anxiety (effect = 0.0078; Standard error = 0.0021; 95%CI: LL = 0.0041, UL = 0.0121), independent mediating effect of self-rated health (effect = 0.0154; Standard error = 0.0030; 95%CI: LL = 0.0098, UL = 0.0215), and the chain mediating effect between anxiety and self-rated health (effect = 0.0046; Standard error = 0.0009; 95%CI: LL = 0.0029, UL = 0.0065). Limitations All projects are self-reported and some results may be biased. In the future, it may be more inspiring to explore more detailed and specific effects of indoor air quality on cognitive function in older people. Conclusions Studies have shown that indoor ventilation frequency can improve cognitive function by reducing anxiety and improving self-rated health in older people Chinese. Encouraging older adults to increase the frequency of indoor ventilation will benefit their mental health and cognitive function.https://doi.org/10.1186/s12877-025-05713-2Indoor ventilation frequencyCognitive functionAnxietySelf-rated healthMultiple mediation effect
spellingShingle Lu Lin
Pingping He
Sihui Qiu
Xiaohui Qiu
Jiangping Chen
Indoor ventilation frequency and cognitive function among Chinese old adults: the multiple mediation effect of anxiety and self-rated health
BMC Geriatrics
Indoor ventilation frequency
Cognitive function
Anxiety
Self-rated health
Multiple mediation effect
title Indoor ventilation frequency and cognitive function among Chinese old adults: the multiple mediation effect of anxiety and self-rated health
title_full Indoor ventilation frequency and cognitive function among Chinese old adults: the multiple mediation effect of anxiety and self-rated health
title_fullStr Indoor ventilation frequency and cognitive function among Chinese old adults: the multiple mediation effect of anxiety and self-rated health
title_full_unstemmed Indoor ventilation frequency and cognitive function among Chinese old adults: the multiple mediation effect of anxiety and self-rated health
title_short Indoor ventilation frequency and cognitive function among Chinese old adults: the multiple mediation effect of anxiety and self-rated health
title_sort indoor ventilation frequency and cognitive function among chinese old adults the multiple mediation effect of anxiety and self rated health
topic Indoor ventilation frequency
Cognitive function
Anxiety
Self-rated health
Multiple mediation effect
url https://doi.org/10.1186/s12877-025-05713-2
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