Annals of Occupational and Environmental Medicine

The Korean Society of Occupational & Environmental Medicine (대한직업환경의학회)
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Dose-Response Relationships between Work-Related Musculoskeletal Neck Symptom and Physical Risk Factors (2 year follow-up study)

작업관련 근골격계 목 증상과 물리적 위험요인의 양-반응관계 (2년간 추적 연구)

Sul, Jin-Gon;Lee, Su-Ill;Kim, Young-Ki;Kang, Dong-Mug
설진곤;이수일;김영기;강동묵

  • Published : 20070600
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Abstract

Objectives: To estimate the association of work-related musculoskeletal neck symptom and occupational risk factors, and to identify the dose-response relationships between work-related musculoskeletal neck symptom and physical condition. Methods: Workers from four metal industry companies were enrolled in the study. General characteristics, psyhcosocial and physical risk factors and work-related musculoskeletal neck symptom were investigated by questionnaire in the baseline study. At the follow-up study 2 years later, the neck symptom was surveyed. Workers who did not complain neck symptom at baseline and complain at follow-up, and workers who did complain neck symptom at baseline and follow-up were defined as case. The adjusted odds ratios (ORs) of physical risk factors were estimated for these subjects. Additionally, subjects who did not change their work at follow-up were analysed. Results: Among the cohort of 251, 199 (79.3%) were used in the analysis, of which 71 (35.7%) were classified as cases. The adjusted ORs and the ORs of the subjects who did not change their work were increased with exposure to the following kinds of work: ‘repetitive’, ‘lift’, ‘push/pull’, ‘neck/shoulder (overhead/bend)’, ‘hand/wrist (bend/pinch)’, ‘trunk (twist/bend)’, ‘pressure point’, and ‘incentive work’. Finally, with increasing exposure to ‘repetitive’, ‘lift’, ‘push/pull’, ‘awkward postures’, ‘pressure point’, and ‘incentive work’, the risks of work-related musculoskeletal neck symptom were increased. Conclusions: Work-related musculoskeletal neck symptom was increased with increasing exposure time of certain physical risk factors, and a dose-response relationship was observed.

목적: 본 연구는 작업관련 근골격계 목 증상과 직업적 위험요인의 연관성을 전향적으로 살펴보고, 물리적 위험요인에 따른 목 증상의 용량-반응 관계를 확인하는 것을 목적으로 하였다. 방법: 금속산업의 4개회사를 대상으로 코호트를 구축하였다. 기초조사에서 일반적 특성, 정신사회적 위험요인, 물리적 위험요인과 작업관련 근골격계 목 증상에 대한 설문을 하였다. 추적조사(2년 후)에서 목 증상에 대한 설문을 하여 기초조사와 추적조사에서 목 증상을 호소하였거나, 기초조사에서 목 증상을 호소하지 않았고 추적조사에서 목 증상을 호소한 대상자를 환례군으로 하여 물리적 위험요인의 교차비를 추정하였다. 그리고 추적조사에서 작업변화가 없었던 대상자만으로 추가 분석하였다. 결과: 전체 251명의 코호트 중 199명(79.3%)의 자료가 분석되었고, 199명 중71명(35.7%)이 환례군으로 분류되었다. 반복, 들기, 밀기/당기기 작업, 목/어깨를 굽히는 자세, 손/손목을 굽히는 자세, 몸통을 굽히는 자세, 신체압박, 유인작업에서 혼란변수를 보정한 물리적 위험요인의 교차비와 작업변화가 없었던 대상자의 교차비가 증가하였다. 그리고 반복, 들기, 밀기/당기기 작업의 노출시간, 작업 자세, 신체압박 및 유인작업에 대한 노출시간이 증가할수록 작업관련 근골격계 목 증상의 위험은 더 증가하였다. 결론: 일부 물리적 위험요인의 노출시간은 용량-반응적으로 작업관련 근골격계 목 증상의 위험을 증가시키는 것으로 조사되었다.

Keywords

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