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In Korea, suicide by nurses due to workplace verbal violence has become a serious social controversy. This study used a descriptive survey to identify factors influencing nurses' experiences with being either victims or perpetrators of verbal violence among colleagues. Participants were 205 nurses working at large-scale general hospitals in D city in August 2019. Data were collected through standardized questionnaires on experiences of verbal violence, committing acts of verbal violence, demographic characteristics, and job stress. For experiences of verbal violence, statistically significant differences were observed in age, gender, and nightshift work. Committing acts of verbal violence showed statistically significant differences in age, gender, entire career experience, career experience in one's present division, and nightshift work. A significant correlation was found between experiences of verbal violence, committing acts of verbal violence, and job stress. Gender and nightshift work influenced experiences of verbal violence in Model 1, while gender, nightshift work, and relationship conflicts were extracted in Model 2. In Model 3, career experience and committing acts of verbal violence were found to be significant. For committing acts of verbal violence, gender, nightshift work, and career experience were extracted in Model 1; gender, nightshift work, and relationship conflict were extracted in Model 2; and nightshift work, career experience, and experiences of verbal violence were significant in Model 3. Regarding verbal violence among nurses, a vicious cycle caused by job stress exists, in which newly hired nurses are often victims of verbal violence; however, as they gain career experience, they become the perpetrators. Therefore, to reduce nurses' job stress, it is necessary to operate job stress-control programs by career level, promote conversations among nurses to increase understanding of each other, and build a culture of mutual respect. [ABSTRACT FROM AUTHOR]

BACKGROUND: Persistent organic pollutants (POPs) are endocrine disruptors and have been suggested as possible risk factors for diabetes. Few studies have been performed to investigate this association among children. OBJECTIVES: In this study, we prospectively examined the relationship between the serum concentration of POPs and glucose metabolism in children. METHODS: Data were collected from the Ewha Birth & Growth Cohort Study, an ongoing birth cohort study initially constructed between 2001 and 2006. In 2010-2012, the POP concentration was measured in serum from a total of 214 children, 7-9 years of age. Using fasting glucose and insulin measurements at both baseline and the second year of follow-up, the homeostatic model assessment of beta-cell function (HOMA-β) and homeostatic model assessment of insulin resistance (HOMA-IR) were calculated. Multiple linear regression analysis and a linear mixed-effects model were used to determine the relationship between POP tertiles and metabolic biomarkers. RESULTS: Compared with the lowest tertile of total marker PCBs, participants in the third fertile had decreased HOMA-β values, after adjustment for age, sex, body mass index z-score, mother's education, ponderal index, and history of breastfeeding (-18.94%; 95% CI: -32.97%, -1.98%). In a linear mixed model, the HOMA-β values were still lower in subjects in the highest compared with the lowest tertile of total PCBs at the 2-year follow-up period (108.3 vs. 135.0, respectively). CONCLUSION: The results of the study suggested that exposure to POPs among children might affect insulin secretory function, which could lead to an increased risk of developing diabetes. CITATION: Park SH, Ha EH, Hong YS, Park H. 2016. Serum levels of persistent organic pollutants and insulin secretion among children age 7-9 years: a prospective cohort study. Environ Health Perspect 124:1924-1930; http://dx.doi.org/10.1289/EHP147 [ABSTRACT FROM AUTHOR]