A Scoping Review of Causal Associations between Occupation and Cancer Occurrence and Legal Burden of Proof.

Occupational diseases, characterized by the gradual accumulation of work-related harmful effects over extended periods, often lack a distinct, identifiable incident causative of the disease. This ambiguity in pinpointing the work-relatedness of such diseases stems from the intricate interplay between occupational risks, workers' pathophysiological predispositions, and pre-existing health conditions, all of which evolve slowly over time. Consequently, establishing a definitive causal relationship between occupational exposure and disease manifestation becomes a pivotal, yet challenging, aspect in securing industrial accident insurance benefits. In contrast to occupational accidents, where causality is relatively more discernible, the complexity escalates in the context of occupational diseases. Typically, employers maintain the majority of data pertinent to establishing causality, but this data is frequently inadequate. Furthermore, the onus of proving the work-relatedness of a disease falls on the worker, a process that necessitates specialized medical knowledge, thereby compounding the difficulty. Imposing the burden of proof on workers in occupational disease litigation could lead to a lapse in worker protection. This paper critically explores methodologies to safeguard workers, focusing specifically on the burden of proof concerning causality in occupational diseases. This analysis aims to highlight the challenges workers face in establishing a connection between their work and disease, proposing potential legal and policy solutions to ensure more equitable and just outcomes in occupational disease claims.

Assessing COVID-19 Vulnerability Among HIV-positive Men Who Have Sex With Men in Korea: The Role of Vaccination and Sexual Behaviors.

OBJECTIVES: Comorbidities increase susceptibility to severe coronavirus disease 2019 (COVID-19) infections, but limited information has been published regarding human immunodeficiency virus (HIV) and COVID-19 co-infections. This study explored the relationships among socioeconomic characteristics, sexual behaviors, and COVID-19 infection rates among Korean men who have sex with men (MSM) who are also living with HIV. METHODS: Data were collected through a web survey aimed at members of the largest gay portal site in Korea, supported by the National Research Foundation of Korea (n=1005). The primary independent variables included COVID-19-related vaccinations and sexual behaviors. The dependent variable was the incidence of COVID-19 infection among respondents during the pandemic. For statistical analysis, hierarchical multiple logistic regression was performed, controlling for potential confounding variables. RESULTS: Model I indicated that older MSM were less likely to contract COVID-19 (adjusted odds ratio [aOR], 0.98; 95% confidence interval [CI], 0.96 to 0.99). Model II demonstrated that HIV-positive MSM were nearly twice as likely to be infected with COVID-19 compared to their HIV-negative counterparts (aOR, 1.97; 95% CI, 1.14 to 3.41). Furthermore, even after accounting for COVID-19 vaccination status in model III, HIV-positive MSM continued to show a higher risk of infection (aOR, 1.93; 95% CI, 1.12 to 3.35). CONCLUSIONS: The findings of this study indicate that HIV-positive MSM are at an increased risk of contracting COVID-19, even when their vaccination status is considered. Therefore, it is essential to prioritize the prevention of COVID-19 infections in HIV-positive individuals by administering appropriate antiretroviral therapy and ensuring adherence to public health guidelines.

Immunoglobulin G4-related disease mimicking an appendiceal neoplasm: a case report.

Immunoglobulin G4-related disease (IgG4-RD) is a fibroinflammatory condition characterized by chronic activation of the immune system and a tendency to form tumorous lesions. IgG4-RD is frequently characterized by the presence of tumor-like masses affecting multiple organs and is easily mistaken for a malignant neoplasm. However, IgG4-RD affecting the appendix is extremely rare, with only seven cases reported previously. We report the case of a woman in her early 60s who presented with insidious abdominal pain and radiological findings mimicking appendiceal neoplasms. After diagnosing appendiceal neoplasms, surgery was performed. The patient had a serum IgG4 concentration of <1.35 g/L, which did not satisfy one of the three revised comprehensive diagnostic criteria for IgG4-RD. A pathological examination was conducted, and the patient was diagnosed with appendiceal IgG4-RD. To the best of our knowledge, there have been no previously reported cases of IgG4-RD affecting the appendix in patients with low serum IgG4 concentrations. This report may prove beneficial for the future understanding of IgG4-RD and for the revision of diagnostic and treatment strategies.

Physical Distancing for Gay Men from People Living with HIV During the COVID-19 Pandemic.

The fear of COVID-19 can exacerbate social stigma and prejudice against individuals living with HIV (PLWH). This research delved into the behaviors of MSM (men who have sex with men) who practice physical-distancing from PLWH. Data from 878 respondents were collected through a web survey conducted on Korea's largest LGBT portal site over one month in July 2022. The study examined various independent variables encompassing socioeconomic characteristics, health status, media consumption habits, and homosexual attributes of MSM. The dependent variable assessed was the extent of physical-distancing perceived by MSMs without HIV toward PLWH. The statistical analysis employed nested regression models. In Model I, it was observed that physical-distancing from PLWH decreased as the age and education level of the respondent increased. In Model II, a decrease in physical-distancing was noted among respondents with underlying health conditions. Model III indicated that increased use of traditional media corresponded to greater physical-distancing from PLWH. Lastly, Model IV revealed a reduction in physical-distancing when the respondent was themselves a person living with HIV. This study underscores the existence of physical-distancing toward PLWH within the gay community. Consequently, fostering solidarity and providing support becomes imperative to prevent the isolation of PLWH within this community.

Behavioral Predictors Associated With COVID-19 Vaccination and Infection Among Men Who Have Sex With Men in Korea.

OBJECTIVES: This study investigated the impact of socioeconomic factors and sexual orientation-related attributes on the rates of coronavirus disease 2019 (COVID-19) vaccination and infection among men who have sex with men (MSM). METHODS: A web-based survey, supported by the National Research Foundation of Korea, was conducted among paying members of the leading online portal for the lesbian, gay, bisexual, transgender, or queer and questioning (LGBTQ+) community in Korea. The study participants were MSM living in Korea (n=942). COVID-19 vaccination and infection were considered dependent variables, while sexual orientation-related characteristics and adherence to non-pharmacological intervention (NPI) practices served as primary independent variables. To ensure analytical precision, nested logistic regression analyses were employed. These were further refined by dividing respondents into 4 categories based on sexual orientation and disclosure (or "coming-out") status. RESULTS: Among MSM, no definitive association was found between COVID-19 vaccination status and factors such as socioeconomic or sexual orientation-related attributes (with the latter including human immunodeficiency virus [HIV] status, sexual orientation, and disclosure experience). However, key determinants influencing COVID-19 infection were identified. Notably, people living with HIV (PLWH) exhibited a statistically significant predisposition towards COVID-19 infection. Furthermore, greater adherence to NPI practices among MSM corresponded to a lower likelihood of COVID-19 infection. CONCLUSIONS: This study underscores the high susceptibility to COVID-19 among PLWH within the LGBTQ+ community relative to their healthy MSM counterparts. Consequently, it is crucial to advocate for tailored preventive strategies, including robust NPIs, to protect these at-risk groups. Such measures are essential in reducing the disparities that may emerge in a post-COVID-19 environment.

Bridging the ICT Revolution and Communication Inequality: Lessons for Cancer Survivors.

The rapid development of information and communication technologies (ICTs) offers new opportunities for providing health information to patients. In this study, we examined the contrasting effects that communication innovation through ICTs can bring in the care of patients with chronic diseases and the health promotion of medical consumers. We also discussed how disparities in information technology usage, based on socioeconomic status, affect the information gap and health inequalities among medical consumers. ICTs have democratized health information, but the information gap persists and can deepen health inequality. Communication inequality manifests in access to technology, information processing, attention to health information, information seeking, and health outcomes. Significant differences in health communication behaviors exist according to social class. Social disparities in technology access and usage contribute to the information gap, which ultimately leads to different health levels. Communication innovation through ICT has both positive and negative effects on managing chronic diseases. Positively, it democratizes information generation and consumption, enabling patients to interact with healthcare providers and peers for support and advice. Negatively, an abundance of medical information can cause cognitive overload. To maximize benefits and minimize adverse effects, efforts should focus on promoting ICTs in healthcare, enhancing patients' decision-making abilities, and addressing communication inequality. Healthcare institutions must provide consistent, high-quality information, and governments should support underserved populations' access to information, ensuring that ICTs contribute to improved health outcomes.

Epidemiology at the Bar: A Legal Proof on Causation with Cancer Epidemiological Results.

The development of natural science has revealed causal relationships that we did not know about through scientific hypotheses and verification. Therefore, given enough time, the causal relationship between the controversial toxic substances and disease outbreaks will be largely elucidated. However, in the courtroom, the judge cannot wait for that moment, and must make a legal value judgment on the causal relationship as a condition for establishing a tort. In other words, the responsibility for who will compensate for the actual damage must be attributed to which party. This study examines the evidence of epidemiological findings in today's risk society. In particular, we deal with cases where there is no way to prove a causal relationship other than epidemiological data in a lawsuit for compensation for damages caused by harmful substances such as cigarettes. This study seeks to find a way to appropriately evaluate the value of evidence by correctly interpreting and rationally utilizing the results of epidemiological studies in court through a pragmatic pluralistic approach.
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Behavioral predictors associated with HIV screening needs in gay Korean men during the COVID-19 pandemic.

During the pandemic, the capacity of medical resources focused on testing, diagnosing and treating COVID-19 has severely limited public access to health care. In particular, HIV screening, for which homosexual males in Korea received free and anonymous testing at public health centers, was completely halted. This study investigated behavioral predictors related to the HIV screening needs of Korean male homosexuals during the pandemic. Data were collected by conducting a web survey targeting members of the largest homosexual portal site in Korea with support from the National Research Foundation of Korea (n = 1,005). The key independent variables are COVID-19-related characteristics and sexual risk behavior. The moderating variable is health information search behavior, and the dependent variable is the need for HIV screening. For a statistical analysis, a hierarchical multiple logistic regression analysis was conducted while controlling for potential confounding variables. According to the results of this study, the need for HIV screening was 0.928 times lower for older people (p<0.05, 95% CI = 0.966-0.998). However, if the respondent had a primary partner, the need for HIV screening was 1.459 times higher (p<0.01, 95% CI = 1.071-1.989). In addition, the need for screening was 1.773 times higher for those who preferred anal intercourse (p<0.01, 95% CI = 1.261-2.494) and 2.034 times higher (p<0.01, 95% CI = 1.337-3.095) if there was a history of being diagnosed with an STD. Finally, health information-seeking behavior was marginally significant. This study revealed that male Korean homosexuals who were young, preferred anal sex with a primary partner, and who had a history of a sexually transmitted disease had a high need for HIV screening at public health centers. They are more likely to be susceptible to HIV infection because they are usually consistent with gay men, characterized by risky behavior. Therefore, an intervention strategy that provides health information using a communication campaign is needed.

Associations Between Conventional Healthy Behaviors and Social Distancing During the COVID-19 Pandemic: Evidence From the 2020 Community Health Survey in Korea.

OBJECTIVES: Many studies have shown that social distancing, as a non-pharmaceutical intervention (NPI) that is one of the various measures against coronavirus disease 2019 (COVID-19), is an effective preventive measure to suppress the spread of infectious diseases. This study explored the relationships between traditional health-related behaviors in Korea and social distancing practices during the COVID-19 pandemic. METHODS: Data were obtained from the 2020 Community Health Survey conducted by the Korea Disease Control and Prevention Agency (n=98 149). The dependent variable was the degree of social distancing practice to cope with the COVID-19 epidemic. Independent variables included health-risk behaviors and health-promoting behaviors. The moderators were vaccination and unmet medical needs. Predictors affecting the practice of social distancing were identified through hierarchical multiple logistic regression analysis. RESULTS: Smokers (adjusted odds ratio [aOR], 0.924) and frequent drinkers (aOR, 0.933) were more likely not to practice social distancing. A greater degree of physical activity was associated with a higher likelihood of practicing social distancing (aOR, 1.029). People who were vaccinated against influenza were more likely to practice social distancing than those who were not (aOR, 1.150). However, people with unmet medical needs were less likely to practice social distancing than those who did not experience unmet medical needs (aOR, 0.757). CONCLUSIONS: Social distancing practices were related to traditional health behaviors such as smoking, drinking, and physical activity. Their patterns showed a clustering effect of health inequality. Therefore, when establishing a strategy to strengthen social distancing, a strategy to protect the vulnerable should be considered concomitantly.

A Legal Approach to Cancer Epidemiology in Public Health.

The Public Health Act encompasses scientific research and law enforcement as causes, distributions, and preventive factors for diseases and injuries of a particular population. Today, the Public Health Law is growing into a field that expects to cultivate and utilize lawful practitioners who can apply specialized legal skills in health policy development and public health performance. The multidisciplinary approach of the Public Health Act integrates the legal and scientific elements of the field and the workforce, characterized by a more dynamic understanding of the health impact of legislation and the rapid deployment of effective policies. Thus, legal health interventions that manage and treat diverse populations need to be evaluated more rigorously and quickly. In addition, funding for policy surveillance and other legislation and policy mapping needs to be more sophisticated to maximize utility and avoid duplication. This study investigated legal interventions to manage and treat various groups of populations for health and discussed the necessity of public health laws.

A Legal and Epidemiological Consideration of the Causal Relationship between Tobacco and Lung Cancer.

This study reviewed issues including causality among tobacco companies' illegal acts, smoking, and lung cancer occurrence. In tobacco lawsuits so far, the burden of proof regarding negligence and a causal relationship has fallen on plaintiffs, who are the injured party. However, since the legislation of the Product Liability Act, the possibility of mitigating plaintiffs' burden of proof has opened up. Nevertheless, this alone cannot prevent the immense socioeconomic cost incurred due to smoking. It is legislatively necessary to enact a tobacco management law so that the no-fault liability of tobacco companies, which are the defendants, for compensation can be acknowledged. However, it is necessary to take supplementary measures through the social security system such as establishing the upper limits for liquidated damages in lawsuits and creating a relief fund for the victims of smoking. In addition, it is fundamentally necessary for courts to accept the methods for inferring causality that are based on the natural sciences and epidemiology in situations such as tobacco lawsuits, where a causal relationship cannot be proven easily. In particular, jurists, too, must consider the application of population-based evidence presented by epidemiologists to lawsuits in a forward-looking manner for redressing damages to individuals with diseases; thus, bridging the gap between normative adjudication and scientific judgment to draw a conclusion about a causal relationship.

Self-Rated Health Status Based on the Type of Health Insurance: A Socioeconomic Perspective.

To investigate the effects of public and private health insurance on self-rated health (SRH) status within the National Health Insurance (NHI) system based on socioeconomic status in South Korea. The data were obtained from 10 867 respondents of the Korea Health Panel (2008-2011). We used hierarchical panel logistic regression models to assess the SRH status. We also added the interaction terms of socioeconomic status and type of health insurance as moderators. Medical aid (MA) recipients were 2.10 times more likely to have a low SRH status than those who were covered only by the NHI, even though the healthcare utilization was higher. When the interaction terms were included, those not covered by the NHI and had completed elementary school or less were 16.59 times more likely to have a low SRH status than those covered by the NHI and had earned a college degree or higher. Expanding healthcare coverage to reduce the burden of non-payment and unmet use to improve the health status of MA beneficiaries should be considered. Particularly, the vulnerability of less-educated groups should be focused on.

Constitution and Legal Basis of Health Rights: Lessons from Cancer Survivors in South Korea.

Social fundamental rights can be called 'factual claims' of the nationality of individuals, which means rights that require active action by the state for the realization of rights. On the other hand, the 'normative benefit right' is the right of the state to demand the enactment of certain laws and regulations. Specifically, the factor to be considered in the analysis of the social rights aspect of the right to health is the 'publicness of healthcare service'. In order for the right to health to function effectively as a social fundamental right, it must reflect the nature of medical care that is most necessary to maintain the right to health. In the end, the right to health is related to all members of the society and has a 'normality of publicness' in the sense that it cannot exclude the benefits of some members. The health care sector, which may cause market failure due to what is termed the asymmetry of information, must be strictly observed in consideration of the essential value of health.
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Contextual effects of social integration and disintegration on health status: evidence from South Korea.

BACKGROUND: Many studies have shown that various social integration variables represented by social capital are beneficial to communities, including collective health. However, the rapid decline in fertility rates and the breakup of familyism in developed countries require a new approach to social disintegration, but the literature is insufficient. Here, we explored the contextual effects of social integration and social disintegration on the health of individuals. METHODS: The research data consist of merged datasets of 6909 respondents who were quota-sampled by approximately 30 people from 229 local governments in Korea. The individual-level independent variable is a social integration measure consisting of 26 questions in four areas. The community-level independent variables are five integral and aggregate variables extracted from 81 indicators. The dependent variable is self-rated health status. Potential confounders are gender, age, annual income, educational attainment, district type, and the number of beds in medical institutions per 1000 people. RESULTS: The results showed that at the individual level, the higher the inclusive attitude of in- and out-of-networks, after adjusting for potential confounders, the less likely the respondent belongs to the unhealthy group (p < 0.001). At the community level, the higher the proportion of single-person households in a community after adjusting for potential confounders, the less likely the respondent belongs to the unhealthy group (p < 0.05). The effect size was 0.22. CONCLUSION: Thus far, social integration has been preferred, with the positive aspects of social capital being emphasized. However, this study shows that in some cases, social disintegration can instead positively influence an individual's health. Therefore, further studies of the various conditions of social context effects on health are necessary.

The Influence of Exposure to Smoking in Movies on Cigarette Cravings among Adolescents: A Contextual Quasi-Experimental Model.

This study explored the socio-contextual characteristics of adolescents that led them to have increased cigarette cravings when exposed to smoking scenes in films. We analyzed online survey data collected from a representative sample of 955 Korean adolescents. Our dependent variable was change in cigarette cravings after watching a smoking scene; independent variables included sex, age, school type, allowance, smoking experience, and parental smoking. We used paired t-tests to identify the differences in cigarette cravings modified by individual characteristics, and we performed logistic regression to explore the influences on these changes in cravings. The high school students investigated herein had significantly stronger cigarette cravings after they watched smoking scenes than they did prior to watching these scenes (t = -5.039, p < 0.001). The cravings were significantly higher after watching the clips among non-smokers (t = -4.264, p < 0.001) and participants who had at least one parent who smoked (t = -2.114, p < 0.05); non-smoking adolescents were also more likely to crave cigarettes after they watched smoking scenes than were smokers (odds ratio = 6.90, p < 0.001). Korean adolescents who did not smoke and those who had at least one parent who smoked showed the strongest cigarette cravings after being exposed to smoking in films. Consequently, more effective prevention strategies should be developed that recognize this tendency when regulating smoking scenes in movies or implementing related campaigns among adolescents.

Digital Health Care and the Fourth Industrial Revolution.

We live in a world where big medical data are being compiled. Many people make use of biometric information gathered by a variety of health care devices linked to smartphones, such as Fitbit devices. In addition, the development of medical information management schemes and the introduction of health information systems have greatly increased the possibility of using medical records stored in medical institutions. With the development of sensor technology and analytical capabilities, we have gained new knowledge through big data, stemming from the collection of data that was not important in the current medical area. Digital health care is moving toward creating value while creating utility as well based on data collected beyond the level of those collected by sensors. Only organizations that have quickly entered the market and accumulated data and have already developed advanced algorithms based on the data can be competitive. However, digital health care companies that survive in the market will lead the change and will reorganize the health care sector. In addition, a big data-based health care platform can help increase the number of e-patients through patient participation.

Risk factors of sexually transmitted infections among female sex workers in Republic of Korea.

BACKGROUND: Female sex workers (FSW) who live in urban areas in Republic of Korea have a particularly high risk of sexually transmitted diseases (STD). We investigated the prevalence of s STDs in FSWs in order to determine the factors associated with sexually transmitted infections in Korea. METHODS: Study data were collected from 832 FSWs through a 2014 survey on the prevalence of STDs in high risk populations in Republic of Korea. We assessed the associations between sexually transmitted infections and demographic and risk behaviour variables through logistic regression analysis. RESULTS: The risk probability of sexually transmitted infection was higher for those who drank alcohol often as well as those who had their first sexual experience at an early age. However, the effects of these factors were attenuated by working conditions. The risk probability of sexually transmitted infections was higher for those who engaged in sex with several customers per day as well as for those who did not practice regular condom use. CONCLUSIONS: The risk factors for sexually transmitted infections among FSWs in Republic of Korea are related to and affected by working conditions. Thus, multifaceted health interventions to protect FSWs and their sexual health are deemed necessary.

Global Challenges to Human Immunodeficiency Virus Prevention.

Because of the high prevalence of human immunodeficiency virus (HIV), men who have sex with men (MSM) is socially branded in many countries, and epidemiological approaches have become difficult for this group. This study reviewed the clinical development and political challenges associated with HIV infection. Organizing and disseminating clinical medical advances can help us eliminate social stigmas and the dishonor linked to MSM. In addition, dealing with the worldwide infection problem of MSM can help to reestablish international joint confrontation and political agendas to promote disease eradication efforts. In many countries, socioeconomic problems are not related to increased numbers of HIV infections. Improving social issues such as human rights and economic problems depending on the circumstances of each country should help reduce the risk of HIV infection. The stigmas affecting HIV-infected persons vary greatly depending on the country. It is a serious problem in many countries, including Korea. It is also an important obstacle to those who work to prevent HIV infection. This stigma is a factor that prevents HIV patients from being diagnosed and treated at an early stage. Delayed diagnosis of and delayed treatment for HIV-infected people not only worsen an individual's prognosis but also can spread HIV socially. Efforts to reduce the stigma are necessary not only for individuals with HIV but also for public health.

Effects of Maternal Decisional Authority and Media Use on Vaccination for Children in Asian Countries.

Background and objectives: It is now accepted that vaccination is a critical public health strategy in preventing child morbidity and mortality. Understanding factors that promote vaccination is a critical first step. The objective of this study was to investigated associations of maternal decisional authority and media use on vaccination for children in six South and Southeast Asian countries. Materials and Methods: Data come from demographic and health surveys conducted in Bangladesh, Cambodia, Indonesia, Nepal, Pakistan, and the Philippines between 2011 and 2014 (N = 45,168 women). Main outcome variables were four types of basic vaccination for children. Independent variables were maternal decisional authority and media use. Hierarchical multivariable regression analyses were performed to examine associations. Results: Children of mothers who had more decisional authority were more likely to be vaccinated compared to those participants who did not have such authority. The likelihood to have their children vaccinated was higher among women who frequently used media than those who did not use media. Conclusions: Maternal decisional authority and media use are related to improved vaccination for children. To increase vaccination rates in developing countries in South and Southeast Asia, programs and policies that promote maternal decisional authority and the use of media for health need to be implemented to help families and local communities.