AUTHOR=Liu Guangdong , Yang Shanshan , Liu Wei , Wang Shengshu , Tai Penggang , Kou Fuyin , Jia Wangping , Han Ke , Liu Miao , He Yao 

TITLE=Canonical Correlation Analysis on the Association Between Sleep Quality and Nutritional Status Among Centenarians in Hainan

JOURNAL=Frontiers in Public Health

VOLUME=8

YEAR=2020

URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2020.585207

DOI=10.3389/fpubh.2020.585207

ISSN=2296-2565

ABSTRACT=<p><bold>Objective:</bold> To analyze the correlation between nutritional status and sleep quality among centenarians.</p><p><bold>Methods:</bold> A total of 1,002 centenarians in Hainan were included in the full sample survey. The Mini Nutritional Assessment-Short Form (MNA-SF) was used for nutritional risk assessment and the Pittsburgh Sleep Quality Index Scale (PSQI) was used for evaluating sleep quality. Canonical correlation analysis was conducted to analyze their correlation.</p><p><bold>Results:</bold> Two statistically significant (<italic>p</italic> &lt; 0.05) canonical coefficients were found, with the first canonical correlation coefficient having a value of 0.247, eigenvalue of 0.065, and contribution rate of 89.0%. The linear combination of nutrition variable V<sub>1</sub>, mainly determined by MNA1 (appetite loss), MNA5 (dementia/depression), and MNA2 (weight loss), indicates an association with sleep quality; the linear combination of sleep quality W<sub>1</sub>, mainly determined by PSQI1 (subjective sleep quality), PSQI7 (daytime dysfunction), and PSQI2 (sleep latency), indicates an association with nutritional status. Appetite loss, dementia/depression, and weight loss have negative correlations with subjective sleep quality and daytime dysfunction.</p><p><bold>Conclusion:</bold> Among centenarians, the relationship between nutritional status and sleep quality is bidirectional. Furthermore, appetite loss, dementia/depression, weight loss, subjective sleep quality, and daytime dysfunction are the main relevant factors.</p>