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Lumbar intervertebral disc degeneration and related factors in Korean firefighters

Authors
 Tae-Won Jang  ;  Yeon-Soon Ahn 
Citation
 BMJ OPEN, Vol.6(6) : 011587, 2016 
Journal Title
 BMJ OPEN 
Issue Date
2016
MeSH
Adult ; Age Distribution ; Cross-Sectional Studies ; Female ; Firefighters* ; Humans ; Intervertebral Disc Degeneration/diagnostic imaging ; Intervertebral Disc Degeneration/epidemiology* ; Logistic Models ; Low Back Pain/etiology ; Lumbar Vertebrae/physiopathology* ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Occupational Diseases/diagnostic imaging ; Occupational Diseases/epidemiology* ; Republic of Korea/epidemiology ; Severity of Illness Index ; Sex Distribution ; Surveys and Questionnaires
Keywords
Degeneration ; Firefighter ; Intervertebral disc ; Occupation
Abstract
OBJECTIVES: The job of firefighting can cause lumbar burden and low back pain. This study aimed to identify the association between age and lumbar intervertebral disc degeneration and whether the association differs between field and administrative (non-field) firefighters. METHODS: Subjects were selected using a stratified random sampling method. Firefighters were stratified by geographic area, gender, age and type of job. First, 25 fire stations were randomly sampled considering regional distribution. Then firefighters were stratified by gender, age and their job and randomly selected among the strata. A questionnaire survey and MRI scans were performed, and then four radiologists used Pfirrmann classification methods to determine the grade of lumbar intervertebral disc degeneration. RESULTS: Pfirrmann grade increased with lumbar intervertebral disc level. Analysis of covariance showed that age was significantly associated with lumbar intervertebral disc degeneration (p<0.05). The value of β (parameter estimate) was positive at all lumbar intervertebral disc levels and was higher in the field group than in the administrative group at each level. In logistic regression analysis, type of job was statistically significant only with regard to the L4-5 intervertebral disc (OR 3.498, 95% CI 1.241 to 9.860). CONCLUSIONS: Lumbar intervertebral disc degeneration is associated with age, and field work such as firefighting, emergency and rescue may accelerate degeneration in the L4-5 intervertebral disc. The effects of field work on lumbar intervertebral disc degeneration were not clear in discs other than at the level L4-5.
DOI
10.1136/bmjopen-2016-011587
Appears in Collections:
5. Research Institutes (연구소) > Institute for Occupational Health (산업보건연구소) > 1. Journal Papers
Yonsei Authors
Yoon, Jin Ha(윤진하) ORCID logo https://orcid.org/0000-0003-4198-2955
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/151798
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