Background and aims: Chronic non-malignant pain is common and difficult to treat. The aim of this study was to investigate whether fear of movement and pain catastrophizing at baseline predicted changes in pain intensity and disability one year after participation in an outpatient group-based pain management program. 
Methods: Self-reported questionnaires were collected  before and one year after a group-based pain management program at a Multidisciplinary Pain Center in Denmark. Logistic regression models were used to investigate if a low fear of movement score (<38) based on the Tampa Scale of Kinesiophobia (TSK) and  a low pain catastrophizing score (<30) based on the Pain Catastrophizing Scale (PCS) at baseline predicted clinically relevant reductions (>30%) in pain intensity (Numeric Rating Scale, NRS) and disability (Pain Disability Index. PDI)
Results: In total 117 chronic pain patients completed the questionnaires at baseline and one year after the intervention. The odds of having a clinically relevant reduction in disability were four times as high in patients who both had a low TSK score and a low PCS score compared with patients with high TSK and PCS scores (OR:3.91(95% CI:1.03-14.90)). A clinically relevant reduction in pain intensity was not predicted by baseline TSK and PCS scores. Moreover, a low score on either TSK or PCS did not predict clinically relevant changes in NRS and PDI.
Conclusions: Screening for fear of movement and pain catastrophizing may be relevant in order to assess which patients are likely to benefit from an outpatient group-based pain management program.

FEAR OF MOVEMENT AND PAIN CATASTROPHIZING AT BASELINE PREDICT TREATMENT OUTCOME ONE YEAR AFTER A PAIN MANAGEMENT PROFRAM