The objective of this study was to investigate the test-retest stability of the Pain Catastrophizing Scale (PCS), the Tampa Scale for Kinesiophobia (TSK) and their subscales in chronic pain patients over relatively long period of times like those that are most often seen in clinical practice. Fifty non-malignant chronic pain patients filled out the PCS and TSK twice with a mean interval between testing of 52 days. Both assessment instruments showed sufficient test-retest stability, even with long time intervals between testing.
Lame, I. E., Peters, M. L., Kessels, A. G. H., van Kleef, M., & Patijn, J. (2008). Test-retest stability of the Pain Catastrophizing Scale and the Tampa Scale for Kinesiophobia in chronic pain patients over a longer period of time. Journal of Health Psychology, 13(6), 820-826. https://doi.org/10.1177/1359105308093866