Predicting treatment failure in the subacute injury phase using the Orebro Musculoskeletal Pain Questionnaire: an observational prospective study in a workers' compensation system.

Objective: The goal of the present study was to examine if patient scores on a brief biopsychosocial screening questionnaire--the Orebro Musculoskeletal Pain Questionnaire (OMPQ)--could predict clinical discharge status ("fit" vs "not fit" for return to work) after a standardized 6-week physical therapy-based work conditioning program.

Methods: The OMPQ was administered to a derivation sample of 200 injured workers with soft tissue injuries before beginning treatment. A clinical cutoff score of 147 was subsequently tested in a second validation sample of 211 injured workers.