Associations Between Somatic Multimorbidity Patterns and Depression in a Longitudinal Cohort of Middle-Aged and Older Chinese

Abstract Although ecological momentary assessment (EMA) has been used in youth and adult populations, very few of the studies provided evidence of the feasibility and utility of smartphone-based EMA protocols to collect biopsychosocial data from aging populations. This study aimed to describe the design and implementation of a smartphone-based EMA protocol, and to evaluate the feasibility and utility of this EMA protocol among community-dwelling late-middle-aged and older Chinese. A sample of 78 community-dwelling Chinese aged between 50 and 70 years was trained to participate in a 1-week EMA data collection, during which each participant carried an Android smartphone loaded with a researcher-developed EMA application and a smartphone-based electrocardiogram (ECG) monitor to provide psychosocial (e.g., daily activities, social interaction, affect) data and ECG recordings six times daily. Adherence was demonstrated with a total response rate of 91.5% of all scheduled assessments (n = 3,822) and a moderately high level of perceived feasibility. Female participants reported higher compliance to the study and rated the overall experience as more pleasant and interesting than male participants. Our study provided the first evidence of the feasibility and utility of smartphone-based EMA protocols among late-middle-aged and older Chinese. Key areas for improvement in future design and implementation of mobile-based EMA include the incorporation of usable technology, adequate and training, and timely assistance.

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Reference Values and Related Factors for Peak Expiratory Flow in Middle-aged and Elderly Chinese

10.21203/rs.3.rs-49971/v1 ◽

2020 ◽

Author(s):

Chao Ji ◽

Huixu Dai ◽

Zhiying Zhao ◽

Tiancong Liu ◽

Shuhui Tong ◽

...

Keyword(s):

Peak Expiratory Flow ◽

Reference Values ◽

Chinese Population ◽

Linear Regression Analysis ◽

Middle Aged ◽

Value Analysis ◽

Men And Women ◽

Expiratory Flow ◽

Older Chinese ◽

Age And Sex

Abstract Background: Peak expiratory flow (PEF), as an essential index used for screening and monitoring asthma, chronic obstructive pulmonary disease, and respiratory mortality especially in elderly, is recommended especially for low resource settings in low- and middle-income countries. However, few reports have focused on the reference of PEF in China, especially in the middle-aged and elderly. Thus, the aim of this study was to determine age- and sex-specific reference values of PEF in the middle-aged and older Chinese population.Methods: There were 11,717 participants included for reference value analysis and 11,340 participants were included for risk factor analysis. The PEF was measured using a peak flow meter in L/min. The distribution of PEF terciles stratified by sex and age were reported. Multiple linear regression analysis was used to determine the associations between risk factors and PEF.Results: The PEF was higher in men than women across all age subgroups. The value of PEF decreased with age in both men and women. Height, weight, handgrip strength, and household air pollution were positively associated with PEF, and age, waist circumference smoking status were negatively associated with PEF significantly in both men and women (all P <0.05). The mean values were 9.38 L/min and 64.12 L/min for men and women. Meanwhile, the prevalence of low PEF was 1.62% and 2.16% for men and women, respectively.Conclusions: Age- and sex-specific centiles of PEF for the middle-aged and older Chinese population were estimated. The reference values for low PEF were provided for epidemiological studies and clinical practice in the future. Interventions on lung function or respiratory disease should be pay more attention on factors associated with PEF.

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