ABSTRACT
Discrimination towards fat individuals is pervasive in the United States, and perceptions of weight discrimination are associated with poor physical and mental health outcomes (e.g., low well-being). The rejection-identification model theorizes that perceptions of group-based discrimination may lead people to identify with their stigmatized group, subsequently helping them maintain well-being. We applied the rejection-identification model to weight discrimination to understand whether positively identifying as fat may mediate the impact of perceived weight-group discrimination on well-being. Across two samples (N = 739), fat-group identification, ingroup affiliation, and body affirmation were tested as mediators of the association between perceived weight discrimination and well-being. We also examined support for weight-related social change. Results showed that fat identification was a significant mediator, associated positively with discrimination but negatively with well-being; fat identification also was positively associated with greater support for weight-related social change. Body affirmation was a significant mediator of well-being and support for weight-related social change. Identifying as fat does not seem to provide the same benefits to well-being observed for other social identities (e.g., ethnicity); perceiving one's own body positively, however, may be a potential pathway through which weight discrimination's consequences can be reduced. Implications for well-being, identity, and the rejection-identification model are discussed.
Subject(s)
Body Image , Social Identification , Body Image/psychology , Ethnicity , Humans , United StatesABSTRACT
BACKGROUND: Educators play a critical role in offering knowledge that is vital to preventing the spread of the COVID-19 in educational settings. This study aims to assess the proportion of preventive practices towards COVID-19 and associated factors among educators in Vietnam. METHODS: A cross-sectional study was conducted on educators at the University of Medicine and Pharmacy at Ho Chi Minh City (UMP) using a self-administered questionnaire between June and August 2020. Online surveys and a multivariable logistic regression analysis were used to determine factors associated with practices. Adjusted odds ratio (AOR) and 95% confidence interval (95% CI) were performed using Stata 14. RESULTS: A total of 779 eligible participants were approached, most of them under 50 years (84.1%), around three-fifth were female (61.0%) and lecturers (61.1%), with only 38.1% of them working at hospitals. Overall, the majority of participants had good preventive practices towards COVID-19 (88.6%). Factors identified as being associated with good practices included participants who are lecturers (AOR 1.8, 95% CI: 1.05-2.97), attending training courses related to COVID-19 (AOR 1.7, 95% CI: 1.05-2.87), working at hospitals (AOR 2.5, 95% CI: 1.28-4.76) and having a higher level of knowledge and attitude relating to COVID-19 (AOR 2.8, 95% CI: 1.52-5.17; AOR 2.8, 95% CI: 1.70-4.48, respectively) (all p < 0.05). CONCLUSION: These findings revealed that most educators reported a good level of preventive practices towards COVID-19. However, lower levels of practices still exist towards COVID-19 among participants who were administrative staff and have less access to training courses related to COVID-19, who reported that they did not work at the hospital and had a lower level of knowledge and attitude related to COVID-19. Because of the important role of educators in the education system, this study is expected to help education and health authorities implement suitable interventions to fill the gaps in practices between educators.
ABSTRACT
BACKGROUND: Healthcare students are a force that will aid healthcare workers in responding to the COVID-19 pandemic. This study aims to evaluate the knowledge, attitude, and preventive practices (KAP) towards COVID-19 for this population in Vietnam. METHODS: An online-based cross-sectional survey was considered with all students at the University of Medicine and Pharmacy in Ho Chi Minh City (UMP), Vietnam, between June and August 2020. A structured questionnaire was used to assess KAP towards COVID-19 with response having considerable data missing in the areas of KAP being excluded from the analysis. All data were analysed by using STATA 14 software, to determine the factors associated with preventive practices, and a multivariable regression analysis was performed, along with odds ratio (OR) and 95% confidence interval (95% CI). RESULTS: A total of 2351 eligible participants completed the survey, 65.6% of whom were female, and their mean age was 21.9 years old (SD = 2.7). Almost all had sufficient knowledge (86.6%) and good preventive practice (92.8%) towards COVID-19; however, there was also a rather low level of positive attitude recorded, at 68.8%. The multivariable logistic regression analysis showed that the female participants, and the receiving of information from the official websites, reported a significantly higher level of good practice. Besides, students who had a high level of sufficient knowledge and positive attitude towards COVID-19 were more likely to have good preventive practices (All p<0.001). CONCLUSION: The findings demonstrated good preventive practice towards COVID-19; however, sufficient knowledge and positive attitude were lower. Therefore, it is an identified requirement to continue with additional education and training strategies to offer a better understanding and positive viewpoint of the pandemic for all students, including healthcare students.
ABSTRACT
For autogenic ecosystem engineers, body size is an aspect of individual performance that has direct connections to community structure; yet the complex morphology of these species can make it difficult to draw clear connections between the environment and performance. We combined laboratory experiments and field surveys to test the hypothesis that individual body size was determined by disparate localized physiological responses to environmental conditions across the complex thallus of the intertidal kelp Hedophyllum sessile, a canopy-forming physical ecosystem engineer. We documented substantial (> 40%) declines in whole-thallus photosynthetic potential (as Maximum Quantum Yield, MQY) as a consequence of emersion, which were related to greater than 10-fold increases in intra-thallus MQY variability (as Coefficient of Variation). In laboratory experiments, desiccation and high light levels during emersion led to lasting impairment of photosynthetic potential and an immediate > 25% reduction in area due to tissue contraction, which was followed by complete loss of structural integrity after three days of submersion. Tissue exposed to desiccation and high light during emersion had higher nitrogen concentrations and lower phlorotannin concentrations than tissue in control treatments (on average 1.36 and 0.1x controls, respectively), suggesting that conditions during emersion have the potential to affect food quality for consumers. Our data indicate that the complex thallus morphology of H. sessile may be critical to this kelp's ability to persist in the intertidal zone despite the physiological challenges of emersion and encourage a more nuanced view of the concept of "sub-lethal stress" on the scale of the whole individual.
Subject(s)
Kelp , Phaeophyceae , Ecosystem , PhotosynthesisABSTRACT
BACKGROUND: A substantial proportion of Plasmodium species infections are asymptomatic with densities too low to be detectable with standard diagnostic techniques. The importance of such asymptomatic plasmodium infections in malaria transmission is probably related to their duration and density. To explore the duration of asymptomatic plasmodium infections and changes in parasite densities over time, a cohort of participants who were infected with Plasmodium parasites was observed over a 2-year follow-up period. METHODS: In this open cohort study, inhabitants of four villages in Vietnam were invited to participate in baseline and subsequent 3-monthly surveys up to 24 months, which included the collection of venous blood samples. Samples were batch-screened using ultra-sensitive (u)PCR (lower limit of detection of 22 parasites per mL). Participants found to be infected by uPCR during any of these surveys were invited to join a prospective cohort and provide monthly blood samples. We estimated the persistence of Plasmodium falciparum and Plasmodium vivax infections and changes in parasite densities over a study period of 24 months. FINDINGS: Between Dec 1, 2013, and Jan 8, 2016, 356 villagers participated in between one and 22 surveys. These study participants underwent 4248 uPCR evaluations (11·9 tests per participant). 1874 (32%) of 4248 uPCR tests indicated a plasmodium infection; 679 (36%) of 1874 tests were P falciparum monoinfections, 507 (27%) were P vivax monoinfections, 463 (25%) were co-infections with P falciparum and P vivax, and 225 (12%) were indeterminate species of Plasmodium. The median duration of P falciparum infection was 2 months (IQR 1-3); after accounting for censoring, participants had a 20% chance of having parasitaemia for 4 months or longer. The median duration of P vivax infection was 6 months (3-9), and participants had a 59% chance of having parasitaemia for 4 months or longer. The parasite densities of persistent infections oscillated; following ultralow-density infections, high-density infections developed frequently. INTERPRETATION: Persistent largely asymptomatic P vivax and P falciparum infections are common in this area of low seasonal malaria transmission. Infections with low-density parasitaemias can develop into much higher density infections at a later time, which are likely to sustain malaria endemicity. FUNDING: The Wellcome Trust, Bill & Melinda Gates Foundation.
