Department of Preventive Medicine, Korea University College of Medicine, Seoul, Republic of Korea
Graduate School of Public Health, Korea University, Seoul, Republic of Korea.
Occup Environ Med. 2020 Oct;77(10):675-680. doi: 10.1136/oemed-2020-106446. Epub 2020 Jul 14.
Suicide is a leading cause of death in the working-age population. We investigated suicide mortality among diagnostic medical radiation workers in relation to their demographic and occupational factors in South Korea.
The study population consisted of all diagnostic medical radiation workers enrolled in the National Dosimetry Registry from 1996 to 2011. The registry data were linked with mortality data through the end of 2017. We calculated age-standardised suicide rates, standardised mortality ratios (SMRs) and rate ratios (RRs) by demographic and occupational factors.
A total of 207 suicides were identified among 94 367 medical radiation workers, exhibiting a suicide rate of 14.0 per 100 000 person-years. Compared with the general population, suicide rates were lower for both male and female workers (SMR 0.49, 95% confidence interval (CI) 0.42 to 0.57; SMR 0.54, 95% CI 0.41 to 0.70, respectively). Similarly, decreased SMRs were observed across job titles and other work-related factors. However, a shorter duration of employment was positively associated with RRs for suicide; risks were 2.74 (95% CI 1.56 to 4.81) and 4.66 (95% CI 1.53 to 14.20) times higher in male and female workers with less than 1 year of employment, respectively, than in those with at least 10 years of employment.
Diagnostic medical radiation workers in South Korea showed lower suicide rates than in the general population. However, a shorter duration of employment was associated with higher risk of suicide. Suicide prevention efforts could target workers engaged in short-term employment.
自杀是工作年龄段人群的主要死亡原因之一。本研究旨在调查与韩国诊断性医疗放射工作人员人口统计学和职业因素相关的自杀死亡率。
本研究的研究对象为 1996 年至 2011 年期间参加国家剂量学登记处的所有诊断性医疗放射工作人员。通过该登记处与死亡率数据相联系，直至 2017 年底。我们根据人口统计学和职业因素计算了年龄标准化自杀率、标准化死亡率比（SMR）和比率比（RR）。
在 94367 名医疗放射工作人员中，共发现 207 例自杀，自杀率为 14.0/10 万。与一般人群相比，男性和女性工作人员的自杀率均较低（SMR 0.49，95%可信区间[CI]0.42 至 0.57；SMR 0.54，95%CI 0.41 至 0.70）。同样，不同职称和其他工作相关因素下的 SMR 也呈下降趋势。然而，较短的就业时间与自杀的 RR 呈正相关；与至少 10 年就业的工作人员相比，男性和女性工作人员中就业时间少于 1 年的 RR 分别为 2.74（95%CI 1.56 至 4.81）和 4.66（95%CI 1.53 至 14.20）。
韩国的诊断性医疗放射工作人员的自杀率低于一般人群。然而，较短的就业时间与自杀风险增加有关。可以针对从事短期就业的工作人员开展预防自杀工作。
