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This study explored the health effect of perceived built environment on depression of the Chinese elderly people in rural areas. A multifaceted approach in examining perceived built environment was used. A sample of 670 older residents in rural area of China were interviewed, and data were collected mainly for exploratory factor analysis, confirmatory factor analysis and moderation analysis. Results showed a reliable construct of perceived built environment which was developed by this study. A significant moderating role of personal income per month in the significantly negative relationship between perceived built environment and depression was confirmed. That is, the health effect of perceived built environment on depression became weakened among people of higher income levels. This study added evidence for the health effect of perceived built environment on depression among Chinese elderly people. Additionally, individual income was identified as an important influencing factor in such effect. Discussion on the negative relationship between perceived built environment and depression, as well as the moderating effect of personal income in such relationship were presented. [ABSTRACT FROM AUTHOR]

The physical status of humans can be estimated by observing the appearance of the tongue coating, known as tongue diagnosis. The goals of this study were to reveal the relationship between tongue coating appearance and the oral microbiota in patients with gastric cancer and to open a novel research direction supporting tongue diagnosis. We used a tongue manifestation acquisition instrument to analyse the thickness of the tongue coating of patients with gastric cancer and that of healthy controls, and high-throughput sequencing was used to describe the microbial community of the tongue coating by sequencing the V2-V4 region of the 16S rDNA. The tongue coatings of 74 patients with gastric cancer were significantly thicker than those of 72 healthy controls (343.11 ± 198.22 versus 98.42 ± 48.25, P < 0.001); 51.35% of the patients were assessed as having thick tongue coatings, whereas all healthy controls were assessed as having thin tongue coatings. Thick tongue coatings presented lower microbial community diversity than thin tongue coatings. The tongue coating bacterial community is associated with the appearance of the tongue coating. The tongue coating may be a potential source for diagnosing gastric cancer, but its sensitivity needs to be further improved. [ABSTRACT FROM AUTHOR]