Increased breast cancer incidence among nurses in a tertiary university hospital in South Korea.

Background: A series of breast cancer cases were recently reported in a tertiary university hospital in South Korea. Nurses are generally exposed to risk factors for breast cancer such as night shift work, antineoplastic agents, and job strain. However, the epidemiological evidence of excess incidence among nurses remains lacking.

Data-Driven Enhancement of ZT in SnSe-Based Thermoelectric Systems.

Doping and alloying are fundamental strategies to improve the thermoelectric performance of bare materials. However, identifying outstanding elements and compositions for the development of high-performance thermoelectric materials is challenging. In this study, we present a data-driven approach to improve the thermoelectric performance of SnSe compounds with various doping.

Relationship Between Emotional Labor and Perceived Health Status Among Service and Sales Workers: Findings From the Korea National Health and Nutrition Examination Survey 2007 to 2009.

Objectives: This study examined the relationship between emotional labor and general health status in a nationally representative sample of South Korean service and sales workers.

Methods: Data were obtained from the 2007 to 2009 Korea National Health and Nutrition Examination Survey. A total of 1907 subjects were included in the analysis.

Self-Rated Health Trajectory Changes According to Employment Transition: A Korean Prospective Cohort Study.

Objective: To investigate the impact of employment transitions on self-rated health (SRH) trajectories.

Methods: We used data from the Korean Labor and Income Panel Study 2003 to 2016. Employment transitions were measured using four categories: continuously non-working, continuously working, labor force exit, and labor force entry.

Effect of Socioeconomic Factors on the Relationship Between Musculoskeletal Pain and Ill-Health Retirement in Korea: Results From the Korean Longitudinal Study of Aging.

Objective: To investigate the relationship between musculoskeletal pain (MSP) and ill-health retirement (IHR) and modifying role of socioeconomic factors.

Methods: The data used were samples from the Korean Longitudinal Study of Aging from 2006 to 2014. IHR was defined as retirement due to health problems before regular retirement age.

The Impact of Working Hours on Cardiovascular Diseases and Moderating Effects of Sex and Type of Work: Results From a Longitudinal Analysis of the Korean Working Population.

Objectives: The aim of this study was to estimate the risk of cardiovascular disease (CVD) caused by working hours in the South Korean working population stratified by sex and type of work.

Methods: We analyzed longitudinal data from the Korean Longitudinal Study of Aging in 2006. The risk of CVD associated with working hours was estimated using Cox regression analysis.

Mental disorders among workers in the healthcare industry: 2014 national health insurance data.

Background: Numerous studies have shown that healthcare professionals are exposed to psychological distress. However, since most of these studies assessed psychological distress using self-reporting questionnaires, the magnitude of the problem is largely unknown. We evaluated the risks of mood disorders, anxiety disorders, sleep disorders, and any psychiatric disorders in workers in healthcare industry using Korea National Health Insurance (NHI) claims data from 2014, which are based on actual diagnoses instead of self-evaluation.

Synthesis of Fluorescent Au Nanocrystals-Silica Hybrid Nanocomposite (FLASH) with Enhanced Optical Features for Bioimaging and Photodynamic Activity.

Fluorescent Au nanocrystals (AuNCs)-silica hybrid nanocomposite (FLASH) was synthesized by co-condensation of surface-modified AuNCs. Present FLASH nanocomposite exhibited four times the enhanced photoluminescence and photocatalytic activity compared to single nanocrystals. On the basis of these enhanced optical features, we successfully demonstrated in vitro fluorescence bioimaging of introduced FLASH to human cervical cancer cell line (HeLa).

The effect of long working hours on 10-year risk of coronary heart disease and stroke in the Korean population: the Korea National Health and Nutrition Examination Survey (KNHANES), 2007 to 2013.

Background: Recently, the emergence of long working hours and the associated conditions such as coronary heart disease (CHD) and stroke have gained attention. The aim of this study was to investigate the association between long working hours and the 10-year-risk of CHD and stroke, estimated by Jee's health risk-appraisal model for ischemic heart disease.

Methods: We analyzed data from Koreans who randomly enrolled in Korean National Health and Nutrition Examination Survey 2008-2012 and finally included 13,799 participants.

Computer use at work is associated with self-reported depressive and anxiety disorder.

Background: With the development of technology, extensive use of computers in the workplace is prevalent and increases efficiency. However, computer users are facing new harmful working conditions with high workloads and longer hours. This study aimed to investigate the association between computer use at work and self-reported depressive and anxiety disorder (DAD) in a nationally representative sample of South Korean workers.

Association between urinary 3-phenoxybenzoic acid and body mass index in Korean adults: 1(st) Korean National Environmental Health Survey.

Background: According to US-EPA report, the use of pyrethrins and pyrethroids has increased during the past decade, and their area of use included not only in agricultural settings, but in commerce, and individual household. It is known that urinary 3-PBA, major metabolite of pyrethroid, have some associations with health effect in nervous and endocrine system, however, there's no known evidence that urinary 3-PBA have associations with obesity.

Method: We used data of 3671 participants aged above 19 from the Korean National Environmental Health Survey in 2009-2011.

Long working hours may increase risk of coronary heart disease.

Objective: To evaluate the association between long working hours and risk of coronary heart disease (CHD) estimated by Framingham risk score (FRS) in Korean adults.

Methods: This study evaluated adult participants in Korean National Health and Nutrition Examination Survey IV (2007-2009). After inclusion and exclusion criteria were applied, the final sample size for this study model was 8,350.