ObjectiveChina has the largest population of elderly citizens in the world, with 177 million adults aged 60 years or older. However, no national estimate of malnutrition in elderly Chinese adults exists. We estimated the prevalence and predictors of malnutrition in this population.DesignData from the second wave of the Chinese Health and Retirement Longitudinal Study (CHARLS) include interview and biomarker data for 6450 subjects aged 60 years or older from 448 different communities in twenty-eight provinces, allowing for nationally representative results. Malnutrition was identified based on the ESPEN (European Society of Parenteral and Enteral Nutrition and Metabolism) criteria. We used multivariable regression to investigate the predictors of malnutrition, including demographic factors, marital status, self-reported health status, self-reported standard of living, health insurance status and education.SettingChina.SubjectsCommunity-dwelling Chinese adults aged 60 years or older.ResultsThe prevalence of malnutrition in elderly Chinese adults was 12·6 %. Malnutrition was most common among those who were older (OR=1·09; 95 % CI 1·07, 1·10), male (OR=1·41; 95 % CI 1·10, 1·79), lived in rural areas (v. urban: OR=0·75; 95 % CI 0·57, 1·00) or lacked health insurance (P<0·01).ConclusionsThe burden of malnutrition on elderly Chinese adults is significant. Based on current population estimates, up to 20 million are malnourished. Malnutrition is strongly associated with demographic factors, shows a trend to association with health status and is not strongly associated with standard of living or education. A coordinated effort is needed to address malnutrition in this population.

Malnutrition and depression are of important concern among older adults. We investigated the association between malnutrition and depression among community-dwelling older Chinese adults and how both affect health care costs. Data from 4916 older adults (age ≥60 years) collected as part of 2013-Wave II China Health and Retirement Longitudinal Study (CHARLS) survey were analyzed. Measures of body mass index and weight loss were used as indicators of malnutrition. Malnourished subjects were 31% more likely to be depressed than their non-malnourished counterparts (odds ratio = 1.311, P < .1). Health care-related cost was ¥591.8 higher for malnourished older adult per year compared to a non-malnourished counterpart ( P < .1), thus confirming that incidence of depression coupled with malnutrition significantly increases health care-related costs. These results highlight the importance of malnutrition and depression screening and treatment for older Chinese community-dwelling adults, and the importance of community-based nutrition-specific programs that could address the needs of the affected populations.

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