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Socioeconomic position and low-back pain--the role of biomechanical strains and psychosocial work factors in the GAZEL cohort.

Abstract : OBJECTIVE: To analyze the role that biomechanical strains and psychosocial work factors play in occupational class disparities in low-back pain in the GAZEL cohort. METHODS: Recruited in 1989, the GAZEL cohort members were employees of the French national company in charge of energy who volunteered to enroll in an annual follow-up survey. The study population comprised 1487 men who completed questionnaires in 1996 (past occupational exposure to manual material handling, bending/twisting, and driving), 1997 (psychosocial work factors), and 2001 (low-back pain using a French version of the Nordic questionnaire for the assessment of low-back pain). Associations between low-back pain for >30 days in the preceding 12 months and social position at baseline (four categories) were described with a Cox model to determine prevalence ratios for each category. We compared adjusted and unadjusted ratios to quantify the contribution of occupational exposures. RESULTS: The prevalence of low-back pain for >30 days was 13.6%. The prevalence of low-back pain adjusted for age was significantly higher for blue-collar workers and clerks than for managers. The number of socioeconomic disparities observed was significantly reduced when biomechanical strains were taken into account; adjusting for psychosocial factors had little impact. CONCLUSION: In this population, occupational exposures--especially biomechanical strains--played an important role in occupational class disparities for persistent or recurrent low-back pain.
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Contributor : Nadine Kaniewski Connect in order to contact the contributor
Submitted on : Wednesday, February 9, 2011 - 11:44:42 AM
Last modification on : Sunday, June 26, 2022 - 11:50:46 AM
Long-term archiving on: : Friday, December 2, 2016 - 7:41:41 PM


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  • HAL Id : inserm-00426434, version 1
  • PUBMED : 19806277


Sandrine Plouvier, Annette Leclerc, Jean-François Chastang, Sébastien Bonenfant, Marcel Goldberg. Socioeconomic position and low-back pain--the role of biomechanical strains and psychosocial work factors in the GAZEL cohort.. Scandinavian journal of work, environment & health, 2009, 35 (6), pp.429-36. ⟨inserm-00426434⟩



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