Annals of Occupational and Environmental Medicine

S H Cho

2 Articles

Effects of Shiftwork on Sleep Patterns of Nurses: S S Hwang, S B Hong, Y W Hwang, E J Hwang, J U Hwang, R G Hwang, H Y Hwang, J G Park, Y S Ju, S J Lee, J H Sung, D H Kang, S H Cho, D R Yun; Korean Journal of Occupational and Environmental Medicine 1998;10(1):1-8. Published online February 28, 1998; DOI: https://doi.org/10.35371/kjoem.1998.10.1.1

Industrialization has introduced various working systems into the modern society. Shiftwork is a good representative among those. So far various adverse health effects, possibly caused by this shiftwork, have mainly been reported in the fields of manufacturing industry by many other researchers , sleep disorders, gastrointestinal disorders and cardiovascular disorders and so on. These health effects were thought to be caused by the changes of circadian rhythm on shiftworking. This study was especially planned to evaluate effects of shiftwork on sleep disorders among shift-working medical manpower like hospital nurses, important persons dealings with lives, and ultimately to provide them with basic evidence for improving work environment. The study subjects were arbitrarily selected among shift-working female nurses and day-working female pharmacists in one university hospital in Seoul, and finally 79 nurses and 58 pharmacists were enrolled. The research was conducted by using self administered questionnaire, consisting of items about socio-behavioral factors including demographic factors which can affect sleep patterns and questions which make it possible to evaluate sleep disorders (e. g. sleeping duration, sleep latency, re-sleep latency, days of insomnia per week, drug use for sleep, and subjective symptoms). The result showed that the shiftworkers had significantly longer sleep and re-sleep latency, more days of insomnia, and a stronger likelihood of using drugs when they had sleep difficulty than day-working pharmacists. And the number of nightshift duties per month was discovered as the only significant predictor of sleep latency. Additionally, the subjective symptoms related to sleep disorders when awake and at work, showed negligible differences between the shiftworkers and dayworkers. In conclusion, we found shiftwork was risk factor for sleep disorders.

Citations

Citations to this article as recorded by

Occupational Psychiatric Disorders in Korea
Kyeong-Sook Choi, Seong-Kyu Kang
Journal of Korean Medical Science.2010; 25(Suppl): S87. CrossRef

31 View
0 Download
1 Crossref

Reliability of questionnaire for evaluating ergonomic exposure in occupational epidemiological studies: M N Ha, D M Paek, S H Cho, D H Kang, H J Kwon; Korean Journal of Occupational and Environmental Medicine 1997;9(4):659-670. Published online December 31, 1997; DOI: https://doi.org/10.35371/kjoem.1997.9.4.659

Abstract PDF

Although occupational musculoskeletal diseases are one of the most prevalent occupational diseases and cost billions of money, limited number of studies were conducted to develop the valid and reliable measure for ergonomic factors, the most important risk factors of these diseases. This study was conducted to develop a questionnaire for ergonomic factors and to evaluate the reliability of the developed questionnaire among foundry workers in Korea. A questionnaire for ergonomic factors was developed on the basis of the results of previously conducted studies and information obtained from a site visit of the worksite. The developed questionnaire was administered to 51 foundry workers at an interval of two weeks. The reliability of the questionnaire was evaluated using Cohen's Kappa, weighted Kappa, spearman's correlation coefficient and category distinguishability in the raw scale and dichotomized scale. The questionnaire items showing high Cohen's kappa include 'walking (0.79)', 'sitting(0.66)' 'raised elbow(0.65)', 'rotated elbow(0.64)', 'lifting(0.66)', 'push & pull(0.66)' and the items of low Cohen's kappa include 'one leg(0.31)', 'wrist lateral deviation(0.22)', 'palm padding(0.14)', 'pinch grip(0.15)'. It seems that the types of work, difficulty of recognition about the posture or movement, and understanding the questionnaire items affect the reliability coefficiencies.

Citations

Citations to this article as recorded by

Musculoskeletal disorders among staff in South Korea’s largest nursing home
Derek Richard Smith, Jae-wook Choi, Myung Ki, Jae-young Kim, Zentaro Yamagata
Environmental Health and Preventive Medicine.2003; 8(1): 23. CrossRef

28 View
0 Download
1 Crossref

Author index