BackgroundOn-call work is a form of work that requires the person to work at any time during the on-call period. Thus, on-call work is often regarded as one of the most severe stress factors. This study investigates the associations between on-call work and health problems, injuries.MethodsThis study was based on the 3rd Korean Working Conditions Survey. Total of 29,246 employed workers who had been working for at least 1 year were included. Logistic regression analysis was performed to investigate the association between on-call work and health problems, injuries.ResultsThe odds ratios for on-call workers in terms of physical health problems, psychological health problems, and injuries were 1.33 (95% confidence interval [CI] 1.22-1.44), 1.31 (95% CI 1.08-1.60), and 2.76 (95% CI 2.26-3.37), respectively. Analysis of the detailed symptoms revealed odds ratios in on-call workers of 2.06 for hearing problems (95% CI 1.63-2.62); 1.71 for skin problems (95% CI 1.38-2.12); 1.22 for back pain (95% CI 1.08-1.38); 1.23 for muscular pains in upper limbs (95% CI 1.12-1.34); 1.27 for muscular pains in lower limbs (95% CI 1.15-1.40); 1.46 for headache, eye fatigue (95% CI 1.32-1.60); 1.37 for abdominal pain (95% CI 1.02-1.85); 1.43 for depression or anxiety disorders (95% CI 1.07-1.93); 1.36 for fatigue (95% CI 1.24-1.49); and 1.41 for insomnia and general sleep difficulties (95% CI 1.13-1.76).ConclusionsThe present study found that on-call work results in an increased risk of health problems and injuries. This study is the result of analyses of broad range of the job spectrum in Korean employed workers; thus, future studies are necessary to determine the effects of on-call work in various job groups.

Objective In case of on-call work, it is mixed with day-duty and night-duty, so that workers may have to work anytime of the day. This study aimed to understand the relations between Korean workers' on-call work, health problem, and injury. Methods Using the 3rd Korean Working Conditions Survey in 2011, this study targeted 29 246 paid workers working for more than a year. Conducting the logistic regression analysis of on-call work and health problem based on the surveyed data, the personal/occupational characteristics, working environment, and job stress were controlled. Results In case of on-call work, it showed higher odds ratio like physical health problems (OR, 1.33; 95% CI 1.22-1.44), psychological health problems (OR, 1.31; 95% CI 1.08-1.60), and injury (OR, 2.76; 95% CI 2.26-3.37). In the results of analysing the detailed health problems, workers on-call work showed higher odds ratio of hearing problems (OR, 2.06; 95% CI 1.63-2.62), skin problems (OR, 1.71; 95% CI 1.38-2.12), back pain (OR, 1.22; 95% CI 1.08-1.38), muscular pain in shoulders, neck, and upper limbs (OR, 1.23; 95% CI 1.12-1.34), muscular pain in lower limbs (OR, 1.27; 95% CI 1.15-1.40), headache and eyestrain (OR, 1.46; 95% CI 1.32-1.60), abdominal pain (OR, 1.37; 95% CI 1.02-1.85), depression or anxiety (OR, 1.43; 95% CI 1.07-1.93), overall fatigue (OR, 1.36; 95% CI 1.24-1.49), insomnia or sleep difficulties (OR, 1.41; 95% CI 1.13-1.76). Discussion In the results of this study, on-call work was related to health problems and injury. Additional study should be conducted to understand the correlations in the future. Poster Presentation Intervention Studies 0055 THE HEALTH RISKS OF OCCUPATIONAL EXPOSURE TO N-HEXANE IN PRINTING INDUSTRYHe Jia-Xi. Shenzhen Centre for Occupational Disease Prevention and Treatment, Shenzhen, Guangdong, China 10. 1136/oemed-2017-104636.40 Objective To evaluate the risks of occupational exposure to nhexane in printing industry. Methods 76 printing factories using n-hexane were investigated. The concentrations of n-hexane in workplaces were tested. The medical examination was carried out for 179 exposed workers and 208 controls. The concentrations of 2,5-hexanedione in urine were tested among 162 exposed workers and 54 controls. The neural electromyography (EMG) examination was performed on 28 cases exposed to n-hexane for more than 4 years.Results The solvents containing n-hexane are used to clean the printing machines. The concentration of n-hexane in the air of the workplaces was 1.5~1553.5 (median=178.2) mg/m3% and 17.59% of them exceeded the occupational exposure limit (OEL). The concentration of n-hexane for exposed individuals was 39~215 mg/m3 and 66.67% of them exceeded the OEL.The results of medical examination showed that the occurrence of conjunctiva congestion (10.65%)*, tremor of fingers (10.06%)* and tendon hyporeflexia (13.41%)** among the exposed workers were significantly higher than that of the controls (4.81%, 6.25% and 4.33%, respectively) (*p<0.05, **p<0.01). The concentrations of 2,5-hexaned...

The purpose of this study were to analyze the clinical correlation between the thyroid autoimmune antibodies (anti-TPO Ab, anti-TG Ab, and TSH) and the maximum standardized uptake value (SUV max ) base on the Hashimoto's thyroiditis and the Graves' disease in diffusely 18 F-FDG uptake of the thyroid gland to the PET/CT image. To achieve this, we was performed the PET/CT examination for the 1,097 subjects from May 2010 to April 2013 in the health screening, and was detected the diffused FDG thyroid uptake, and was additionally performed the thyroid function test (TFT) and the ultrasound (US). As a results, the autoimmune thyroid disease with the diffused FDG thyroid uptake were discovered 39 patients (3.9%), of this, the Hashimoto's thyroiditis was 43.6% and the Graves' disease was 23.1%. Hashimoto's thyroiditis was shown the positive reaction of high titer between the anti-TPO Ab and the anti-TG Ab level, and the correlation coefficient between the SUV max and the anti-TPO Ab was a statistically significant (r>04, p<0.05). Also, Graves' disease was shown the positive reaction of high titer most of the thyroid autoimmune antibodies, and the correlation coefficient between the SUV max and the anti-TPO Ab was a statistically significant (r>05, p<0.01). Therefor, when have a high standard of the SUV max due to the diffusely 18 F-FDG uptake of the thyroid gland, Hashimoto's thyroiditis and Graves' disease were proportionally increased the anti-TPO Ab and TSH level, respectively. The correlation coefficient between the SUV max and the thyroid autoimmune antibodies will be the most influential criterion that was a standard of judgment for the epihpenomenon of the autoimmune thyroid disease, and it will be available for the clinical application.