BackgroundThere has been a dramatic increase in internal migrant workers in China over recent decades, and there is a recent concern of poor mental health particularly amongst younger or “new generation” migrants who were born in 1980 or later.MethodsA cross-sectional study was conducted in Guangzhou city between May and July in 2012. Mental wellbeing was measured using the World Health Organization Five-item Well-Being Index Scale and the 36 Item Short Form Health Survey mental health scale. Linear and logistic regression models were used to investigate the differences between migrant workers and their urban counterparts and between younger and older migrants.ResultsMigrant workers (n = 914) showed a small but significant advantage in mental wellbeing compared to their urban counterparts (n = 814). There was some evidence for age modification effect (p for interaction = 0.055-0.095); better mental wellbeing in migrants than urbanites were mainly seen in the older compared to the younger group, and the difference attenuated somewhat after controlling for income satisfaction. Older migrants showed better mental health than younger migrants. Factors that were independently associated with poor mental health in migrants included being male, longer working hours, and income dissatisfaction, whilst older age, factory job, high income, and increased use of social support resources were associated with reduced risk.ConclusionsEfforts to promote mental health amongst migrant workers may be usefully targeted on younger migrants and include measures aimed to improve working conditions, strengthen the social support network, and address age-specific needs.
Objective: To evaluate the effect of low concentration atropine combined with Orthokeratology (OK) lens compared with the OK lens on the changes of axial length in children with moderate and low myopia by meta-analysis. Methods: Databases such as PubMed, Web of Science, Embase, and Cochrane Library were comprehensively searched to collect related studies on atropine combined with the OK lens in the treatment of children with moderate and low myopia. The retrieval time was from the establishment of the database to December 2020. The standardized mean difference (SMD) and its 95% confidence interval (CI) were selected as the effect to analyze the changes of the axial length of the eye axis in children with low and moderate myopia treated with low concentration atropine combined with OK lens. Results: A total of eight articles were included in this study. Compared with OK lens treatment, low concentration atropine combined with the OK lens significantly slowed down the axial elongation of low and moderate myopia, SMD = −0.68(95% CI: −0.86–−0.50, p < 0.05). According to the subgroup analysis of treatment time, when the treatment time was less than or equal to 6 months, SMD = −0.63(95% CI: −0.88–−0.37, p < 0.05), when the treatment time was 1 year, SMD = −0.76(95% CI: −1.08–−0.43, p < 0.05), and when the treatment time was 2 years, SMD = −0.69(95% CI: −1.07–−0.31, p < 0.05). Conclusion: Low concentration atropine combined with the OK lens is more effective than the OK lens in the treatment of children with low to moderate myopia in reducing axial elongation.
Background Evidence suggests that eHealth tools adoption is associated with better health outcomes among various populations. The patterns and factors influencing eHealth adoption among the US Medicaid population remain obscure. Objective The objective of this study is to explore patterns of eHealth tools adoption among the Medicaid population and examine factors associated with eHealth adoption. Methods Data from the Health Information National Trends Survey from 2017 to 2019 were used to estimate the patterns of eHealth tools adoption among Medicaid and non-Medicaid populations. The effects of Medicaid insurance status and other influencing factors were assessed with logistic regression models. Results Compared with the non-Medicaid population, the Medicaid beneficiaries had significantly lower eHealth tools adoption rates for health information management (11.2% to 17.5% less) and mobile health for self-regulation (0.8% to 9.7% less). Conversely, the Medicaid population had significantly higher adoption rates for using social media for health information than their counterpart (8% higher in 2018, P=.01; 10.1% higher in 2019, P=.01). Internet access diversity, education, and cardiovascular diseases were positively associated with health information management and mobile health for self-regulation among the Medicaid population. Internet access diversity is the only factor significantly associated with social media adoption for acquisition of health information (OR 1.98, 95% CI 1.26-3.11). Conclusions Our results suggest digital disparities in eHealth tools adoption between the Medicaid and non-Medicaid populations. Future research should investigate behavioral correlates and develop interventions to improve eHealth adoption and use among underserved communities.
This paper discusses the state of the art of deep sea mining technology in China. The research and development of deep sea mining technology in China started from the polymetallic nodules mining. A pilot mining system, which consists of a self-propelled collector, hydraulic pipe lift and a surface vessel, has been developed. In 2001, a lake mining trial was conducted in the pilot system, through which artificial nodules lying on the floor of lake were collected by the collector and then transported up to the surface vessel by a flexible hose subsystem. The lake mining trial confirmed the maneuverability and controllability of the self-propelled collector, the efficiency of the hydraulic pick-up device, and the feasibility of lifting system with flexible hose. In addition, some research has been conducted on the cobalt-rich ferromanganese crusts mining techniques such as the methods of in situ fragmentation and separation of crusts from the substrate rock, and the technique of crust mining using the robotic seabed vehicles. During the past decade, China has enhanced the research on key techniques of deep sea mining system. Some new laboratories and facilities have been constructed, including a miner test laboratory with a 50 mx50 mx5 m basin, a lifting test setup which can carry out circular lifting test and one way transporting test, and a computer simulation research laboratory which can partially test some boundary conditions and demonstrate simulation results. China has further planned to investigate the techniques of deep sea mining for polymetallic sulphide, to develop the facilities for the application, and to assess the economic feasibility of the deep sea mining development. We will continue to explore the new deep sea mining methods and technologies.
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