Table 1 Outcome measures
Global perceived effect:This evaluates the global effect of the treatment. The patients compare their baseline status with their status at the follow-up, measured on a 5 point Likert scale.
Roland Morris Questionnaire (RMQ):A disease-specific questionnaire concerning functional disability. The patient answers 23 questions, and the scale is scored between 0 and 23, where 23 is the worst possible score.
The Self-Perceived Function Scale:A patient-specific questionnaire concerning functional disability. The patient chooses the three functions that are the most bothersome and scores each on a scale from 0 to 10, where 10 represents their status before symptoms began. The three scores are added, with 0 as the worst possible score.
Days with LBP:The patient determines how many days within the last 100 days he or she has suffered from LBP.
LBP rating scale:Measures both pain and function. Here only the pain questionnaire was used. The patient scores, on an 11-point box scale, the present pain and the worst and mean pain within the last 2 weeks. The three scores are added together.
Serum analysis:Leucocytes, neutrophils, eosinophils, basophils, lymphocytes, monocytes, P/S creatininium, lactate dehydrogenase, alkaline phosphatase, C-reactive protein.