RESUMEN
OBJECTIVES: This study investigates the relationship between emotional symptoms and dental caries in adolescents and the role of dietary patterns as mediating variables. METHODS: This cross-sectional study used a multistage stratified random sample of schools, in Jiangsu, with a sample of 17,997 adolescents aged 11-19. Measures included emotional symptoms, dental caries, toothbrushing frequency, and dietary patterns. Logistic and Poisson regression models were conducted to test mediation hypotheses. RESULTS: The decayed, missing, and filled teeth index (DMFT) was related to depressive symptoms following adjustment for other variables (incidence rate ratios [IRR] = 1.09; p < 0.05), but not to anxiety symptoms level (IRR = 1.02; p > 0.05). The link between depressive symptoms and DMFT had a partial mediation impact on toothbrushing frequency (a, b, c' all p < 0.05). Sugary foods, but not fried foods, partially mediated the link between depressive symptoms and caries when toothbrushing frequency was adjusted. CONCLUSION: There are direct and indirect associations between emotional symptoms and caries; the latter may be due to changes in oral health behaviours that increase the risk of caries.
RESUMEN
Factor market distortion is a critical factor that affects environmental pollution, and technological innovation is regarded as a new opportunity to alleviate environmental pollution. Based on panel data from 30 Chinese provinces from 2003 to 2019, this study constructs an intermediary effect model to test the influence mechanism of factor market distortion on regional environmental pollution and the intermediary effect of technological innovation, exploring these effects based on spatial differentiation characteristics. This study shows that factor market distortion protects industries with backward production capacity, high resource consumption, serious pollution, and low production efficiency from elimination; hinders the transformation and upgrading of the regional industrial structure; and forms a lock in the sloppy growth mode, which directly affects the improvement of regional environmental quality. This study reveals the influence of factor market distortions on environmental pollution. This provides empirical evidence for giving play to the decisive role of the market in resource allocation and promoting green technology innovation.