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KMID : 0358520110230010064
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Korean Journal of Occupational and Environmental Medicine
2011 Volume.23 No. 1 p.64 ~ p.70
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The Relationship between Hospital Departments and Risk of Developing Tuberculosis among Nurses Working at a University Hospitalin Korea: Retrospective Cohort Study
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Yoon Jin-Ha
Lee Ki-Hyun
Kim Sung-Kyung
Oh Je-Ho
Won Chung-Se
Chang Sei-Jin
Cha Bong-Suk
Oh Sung-Soo
Eom Ae-Yong
Koh Sang-Baek
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Abstract
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Objectives: To investigate the occurring characteristics of pulmonary tuberculosis (TB) among nurses working at a university hospital in Korea.
Methods: A retrospective cohort study was conducted using medical records from a university hospital. A total of 351 nurses without any pulmonary disease were enrolled during 2000~2007, and were followed up until October 2010. To compare with the incidence of TB between occupational subgroups, workplaces were divided into high and low TB-exposure risk departments. For statistical analysis, the relative risks for TB incidences between departments were estimated using Cox proportional hazards models and mean incidences were estimated with person-time years.
Results: Seven cases of TB were observed during 2001 person-years. Five and two cases were observed in the high and low TB-exposure risk departments, respectively. The relative risk of TB infection in the high TB-exposure risk departments were 6.52 (95% CI, 1.26~33.60) compared to that in the low TB-exposure risk department. The mean incidence of TB in the total nurses was 0.350% per personyear.
Conclusions: According to the concept of occupational and environmental medicine, high TB-exposure risk departments were more likely to be at increased risk of tuberculosis.
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KEYWORD
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Tuberculosis, Nurses, Retrospective cohort
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