• William S Shaw, Silje Endresen Reme, Glenn Pransky, Mary Jane Woiszwillo, Ivan A Steenstra, and Steven J Linton.
• Liberty Mutual Research Institute for Safety, Hopkinton, MA 01748, USA. william.shaw@libertymutual.com
• J. Occup. Environ. Med. 2013 Aug 1;55(8):885-94.

ObjectiveTo reduce a full psychosocial test battery to a brief screening questionnaire to triage return-to-work strategies among patients with low back pain (LBP).MethodsWorkers (N = 496) with acute, work-related LBP completed multiple psychosocial measures at intake, then a 3-month follow-up of pain, function, and work status. A sensitivity analysis was conducted to reduce the number of items while maintaining scale reliability, preserving associations with outcomes, and maintaining separation between patient subgroups.ResultsThe pool of items was trimmed from 129 to 46 items, describing elements of emotional distress, pain beliefs, organizational support, and activity limitation. A confirmatory cluster analysis replicated previous findings of three risk subgroups: distressed, avoidant, and lacking employer support.ConclusionsThe reduced measure is a reliable and valid screening measure that can be used to identify early intervention needs among working adults with LBP.

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