Cross-sectional study of association between dietary pattern and cognitive performance in people aged 50 and above years in Shanghai / 中华流行病学杂志

Objective: To investigate the association between dietary pattern and cognitive performance in local residents aged ≥50 years in Shanghai. Methods: Data were obtained from the second round of Study of Global Ageing and Adult Health (SAGE) survey in Shanghai. Dietary patterns were surveyed by factor analysis. Cognitive tests were conducted to assess subjects' cognitive performance, including verbal recall, verbal fluency and digit test. Multiple linear regression analysis was used to evaluate the relationship between dietary patterns and cognition performance. Results: A total of 4 132 subjects with complete dietary and cognitive performance test data were included. Factor analysis was used to obtain three dietary patterns: including plant-based pattern, high animal-food pattern, high salt-oil pattern. After controlling for gender, age, education level and other factors, it was found that plant-based pattern (β=0.26,95%CI: 0.17-0.36) and high animal-food pattern (β=0.18, 95%CI:0.06-0.29) were positively associated with total cognitive test score while high salt-oil pattern (β=-0.28, 95%CI:-0.85--0.07) was negatively associated with verbal fluency test score. Conclusion: A dietary pattern with high intake of plant food and appropriate intake of animal food might be associated with better cognitive function of residents aged ≥50 years.

Evaluation of frailty in people aged 50 years and above in Shanghai / 中华疾病控制杂志

Objective To evaluate frailty in people aged 50 years and above in Shanghai. Methods Cross-sectional data was collected from 2009 to 2010 among people aged 50 and above in Shanghai in the World Health Organization (WHO) study on global AGEing and adult health (SAGE) wave 1. A frailty index (FI) was constructed as the proportion of deficits in 40 variables. A FI of 0.2 or greater was recognized as approaching a frail state. Results A total of 8 632 participants were included, with average age of 63.3 years. The overall weighted prevalence of frailty was 7.8% (95% CI: 5.8-10.4%), the score of FI was 0.08 (95% CI: 0.07-0.09), which were both higher among women, elderly people, the divorced (separated/widowed) and individuals with lower levels of education and wealth. In addition, Ageing, insufficient intake of vegetable and fruit and low level of physical activity were significantly associated with frailty and higher FI. Conclusions Our study provides the epidemiological characteristics of frailty in people aged 50 years and older in Shanghai. It highlights the need for targeted preventive approaches and support programs to promote physical, psychological and social health in elderly people.

Analysis on the major chronic non-communicable diseases and associated common risk factors among Chinese middle-aged and older population / 上海预防医学

Objective To estimate the prevalence of eight chronic non-communicable diseases ( NCDs) and associated common risk factors among Chinese middle-aged and older population . Methods The prevalence of eight NCDs and five common risk factors for NCDs among adults aged 50 years and older were estimated based on the survey data from SAGE-China wave Ⅰ.Ordinal logistic regression models were performed to examine the associated risk factors and social determinates for multiple chronic conditions . Results Adjusting for design weights and post-stratification , the proportions of insufficient vegetables and fruits intake ,low level of physical activity , current daily smoking use , obesity and frequent heavy drinker were 35.6%, 28.1%, 26.7%, 12.8% and 6.3%, respectively.And the prevalence of hypertension , arthritis, angina, chronic lung disease , diabetes, stroke, asthma and depression were 61.3%, 22.0%, 7.9%, 7.9%, 6.6%, 3.1%, 1.9%and 0.3%, separately.The proportion of multiple chronic condi-tions was 28.4%.The older elderly, women, living in the urban, more risk factors would increase the risk of multiple chronic conditions . Conclusion The prevalence of NCDs is very high and multiple chronic conditions are common among middle-aged and older population .Hence, more attentions should be paid and multiple effective control measures should be taken .