Long-Term High Dietary Diversity Maintains Good Physical Function in Chinese Elderly: A Cohort Study Based on CLHLS from 2011 to 2018

Abstract

(1) Objective: This study aimed to explore the correlation between dietary factors and physical function in Chinese elderly. (2) Methods: A cohort study was conducted on the association of long-term dietary intake status with physical function in older people based on the Chinese Longitudinal Healthy Longevity Survey (CLHLS) from 2011 to 2018. The physical function of the subjects was judged according to the scores of basic activities of daily living (BADL) and instrumental activities of daily living (IADL). The dietary diversity score was established according to the intake frequency of the food groups, and the dietary pattern score was obtained by factor analysis. The associations between dietary factors and functional impairment was investigated by logistic regressions. (3) Results: A total of 2282 subjects were included in our cohort study, 458 and 1439 of whom had BADL limitation and IADL limitation, respectively. The risk of functional impairment decreased in the consistent high dietary diversity groups compared with the consistent low dietary diversity group (p < 0.05). The fruit-egg-milk pattern, vegetable-meat-fish pattern, and condiment and tea pattern reduced the risk of functional impairment (p < 0.05). (4) Conclusions: Long-term maintenance of high dietary diversity and increasing total dietary intake can help maintain good physical function of Chinese elderly.

Age and cohort trends of the impact of socioeconomic status on dietary diversity among Chinese older adults from the perspective of urban–rural differences: A prospective cohort study based on CLHLS 2002–2018

“…Based on previous studies ( 9 , 21 , 31 ), several demographic factors were used as control variables. Gender was measured dichotomously, with “1” coding female and “0” male.…”

Protocol for Shenzhen Ageing Cohort Study (SZ-ageing): a prospective observational cohort study of elderly disability and cognitive impairment

“…Lawton and Brody’s IADL Scale is used to assess the self-report independent living functions in one’s daily life in eight different activities: meal preparation, grocery shopping, housekeeping, laundry, handling money, using the telephone, taking transportation and managing medications 18. For each domain, participants are considered as disabled if they were unable to perform at least one activity without a given level of help 5 18 19…”

“…Disability and dementia are the leading causes of loss of independence, need for care and death among elderly individuals in China, and hence the main factors affecting healthy ageing 1. Aihemaitijiang et al disclosed an age-dependent increase in disability in performing Basic Activities of Daily Living (BADL) in the Chinese elderly individuals, with 11.19% in 60–79 years of age and 34.24% in 80 years and older 5. Cognitive impairment includes mild cognitive impairment (MCI) and dementia.…”

“…The key challenge is to accurately identify individuals with a high probability of subsequent disability or cognitive impairment development, who may be suitable for trial inclusion and willing to participate in primary prevention studies. However, no previous studies have assessed systematic risk factors and biomarkers for disability and cognitive impairment among Chinese elderly individuals 5 7–10…”

Long-Term Food Variety and Dietary Patterns Are Associated with Frailty among Chinese Older Adults: A Cohort Study Based on CLHLS from 2014 to 2018

“…The higher the score, the more diverse the food intake. Based on previous studies, we defined a score less than 7 as low FVS and a score greater than or equal to 7 as high FVS [ 33 ].…”