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. 2018 Jun 20:30:42.
doi: 10.1186/s40557-018-0253-9. eCollection 2018.

The associations between work-related factors and temporomandibular disorders among female full-time employees: findings from the Fourth Korea National Health and Nutrition Examination Survey IV (2007-2009)

Wook Han  1 , Soon-Chan Kwon  1 , Yong-Jin Lee  1   2 , Chan Park  1 , Eun-Chul Jang  1
Affiliations

The associations between work-related factors and temporomandibular disorders among female full-time employees: findings from the Fourth Korea National Health and Nutrition Examination Survey IV (2007-2009)

Wook Han et al. Ann Occup Environ Med. .

Abstract

Background: The aim of this study was to investigate the association between work-related factors and temporomandibular disorders (TMD) among female full-time employees using representative data from a national population-based survey.

Methods: Data from the Fourth Korea National Health and Nutrition Examination Survey IV (2007-2009) were used to analyze 1,612 women. Complex samples logistic regression was applied for adjusting for general characteristics and work-related factors to examine the association between work-related factors and TMD.

Results: The prevalence of TMD was 12.8% in this study population. With respect to age, educational status, marital status, problem drinking, exercise, and stress, there were statistically significant differences in the prevalence of TMD. In logistic regression analyses on complex samples, based on 40 h or less per week, odds ratios (ORs) for respondents who worked 40-48 working hours, 49-60 working hours, and more than 60 h were 1.16 (95% confidence interval (CI) 0.69-1.94), 1.41 (95% CI 0.79-2.54), and 2.43 (95% CI 1.29-4.59), after adjusting for general characteristics, working schedule, employment status, and occupation.

Conclusions: This study found that long working hours were significantly associated with TMD in Korean female full-time employees.

Keywords: Temporomandibular disorders (TMD); Working hours.

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Conflict of interest statement

All participants provided written informed consent, and the institutional review board of the Korea Centers for Disease Control and Prevention (KCDC) approved the study (IRB: 2007–02-CON-04-P, 2008-04EXP-01-C, 2009-01CON-03-2C).This study is an original work, has not been previously published whole or in part, and is not under consideration for publication elsewhere. Written informed consent was obtained from all participants before enrollment. All authors have read the manuscript, agree the work is ready for submission to a journal, and accept responsibility for the manuscript’s contents.The authors declare that they have no competing interests.

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