The Dynamic weight-bearing Assessment of Pain (DAP) for knee osteoarthritis is designed to measure pain during a specified function. It is a simple performance test (30 seconds of deep knee bends from a standing position), with subsequent pain rating on an 11 point numeric scale (0 = no pain, 10 = worst pain). Acceptable reliability, agreement and smallest detectable change of the DAP have been established. The objectives of this study is to estimate the construct (discriminative) validity, responsiveness and interpretability of the DAP.
Louise Klokker, Robin Christensen, Eva E. Wæhrens, Elisabeth Bandak, Cecilie Bartholdy, Henning Bliddal, Marius Henriksen.