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Authors' response: RCTs of ergonomic interventions
  1. Maurice T Driessen1,2,
  2. Johannes R Anema1,2,3,
  3. Karin I Proper1,2,
  4. Allard J van der Beek1,2,3
  1. 1Body@Work, TNO VUmc, Research Center for Physical Activity, Work and Health, VU University Medical Center, Amsterdam, the Netherlands
  2. 2Department of Public and Occupational Health and the EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, the Netherlands
  3. 3Research Center for Insurance Medicine, AMC-UWV-VUmc, Amsterdam, the Netherlands
  1. Correspondence to Johannes R Anema, VU University Medical Center, EMGO Institute for Health and Care Research, Department of Public and Occupational Health, van der Boechorststraat 7, 1081 BT Amsterdam, the Netherlands; h.anema{at}vumc.nl

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The findings of our systematic review (see page 277) showed that ergonomic interventions are not effective for preventing or reducing low back pain (LBP) and neck pain among non-sick listed workers. In this systematic review only randomised controlled trials (RCTs) were included, but Westgaard (see page 217) questions whether study designs other than RCTs (eg, quasi-experimental and qualitative studies) would be also suitable for evaluating the effectiveness of ergonomic interventions in the workplace. For a long time, the conduct of a systematic review on RCTs only was not possible because RCTs on ergonomic interventions were lacking. Therefore, reviews also included study designs that were suspicious for bias (ie, pre–post trials, prospective cohort studies, controlled trials and quasi-experimental trials).1 2 However, in …

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