• Jette Nygaard Jensen, Andreas Holtermann, Thomas Clausen, Ole Steen Mortensen, Isabella Gomes Carneiro, and Lars Louis Andersen.
• National Research Centre for the Working Environment, Lersø Parkalle 105, DK 2100, Copenhagen, Denmark.
• Bmc Musculoskel Dis. 2012 Jan 1;13:87.

BackgroundLow back pain (LBP) represents a major socioeconomic burden for the Western societies. Both life-style and work-related factors may cause low back pain. Prospective cohort studies assessing risk factors among individuals without prior history of low back pain are lacking. This aim of this study was to determine risk factors for developing low back pain (LBP) among health care workers.MethodsProspective cohort study with 2,235 newly educated female health care workers without prior history of LBP. Risk factors and incidence of LBP were assessed at one and two years after graduation.ResultsMultinomial logistic regression analyses adjusted for age, smoking, and psychosocial factors showed that workers with high physical work load had higher risk for developing LBP than workers with low physical work load (OR 1.8; 95% CI 1.1-2.8). In contrast, workers with high BMI were not at a higher risk for developing LBP than workers with a normal BMI.ConclusionPreventive initiatives for LBP among health care workers ought to focus on reducing high physical work loads rather than lowering excessive body weight.

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