[Sleep Duration and Abdominal Obesity in Elderly in China].

Objective: To determine the relationship between sleep duration and abdominal obesity in elderly in china.

Methods: Data were drawn from the 2013 China Health and Retirement National Investigation (China Health and Retirement Longitudinal Study, CHARLS). The prevalence of abdominal obesity in the elderly who had a normal range of sleep duration was compared with those who had a shorter or longer sleep duration using Chi-square tests and binary logistic regression models.

[Perceptions and Attitudes of Chengdu Residents toward "Medical and Aged Care" Integrated Models].

Objectives: To investigate the perceptions and attitudes of Chengdu residents toward "medical and aged care" integrated models and associated factors.

Methods: A cross-sectional questionnaire survey was conducted in 935 residents who were 45 years or older in 8 communities in Chengdu. Descriptive analyses and logistic binary regression analyses were performed.

[Prevalence and Associated Factors of Arthritis in Middle- and Old-aged Populations in China].

Objectives: To determine the prevalence of arthritis in middle- and old-aged populations in China and associated factors.

Methods: Data were drawn from the 2013 China Health and Retirement Longitudinal Study (CHARLS). Binary logistic regression analyses were performed to examine the associations of arthritis with social economic status (age, gender, areas, education), comorbidity (hypertension, dyslipidaemia, diabetes, cancer, chronic lung disease, liver disease, heart disease, stroke, kidney disease, digestive disease, asthma), lifestyle (smoking, drinking, sleeping) and mental health (depression symptoms).

[Urban-Rural Differences in the Role of Family Support in Physical and Mental Health of Elderly People in China].

Objectives: To investigate social support for elderly in urban and rural settings, and determine its role in physical and psychological health of the elderly populations.

Methods: Data were extracted from the 2013 China Health and Retirement Longitudinal Study (CHARLS). Physical health was measured by the ADL/IADL scale.

[Depressive Symptoms in the Mid- and Old-aged People in China].

Objectives: To determine the prevalence and determinants of depressive symptoms in the mid- and old-aged people in China.

Methods: Data were extracted from the 2013 China Health and Retirement Longitudinal Study (CHARLS),which containthe Center Epidemiologic Studies-Depression scale(CES-D). Binary logistic regression models were developed to identify factors associated with the prevalence of depression symptoms.

[Regional Differences and Determinants of Self-rated Health in Elderly].

Objective: To determine differences of self-rated health in elderly people across geographic regions of China, and to identify factors influencing self-rated health of elderly.

Methods: Ordered logistic modeling was performed using the China Health and Retirement Longitudinal Study (CHARLS) data in 2013.

Results: Elderly people resided in Eastern China had better self-rated health than their counterparts residing in Middle (partial regression coefficient 0.