The aim of this survey is the evaluation of the responsiveness and the estimation of the MCID of the German and French Multiple Sclerosis Questionnaire for Physiotherapists, a self-rating Patient Reported Outcome questionnaire. This multicenter project uses a combined anchor and distribution based approach with multiple anchors to provide a range of MCID estimates or a single MCID for the reliable and valid Items, Activity and Participation group and the Total Score of the MSQPT, which should to be used as guidelines in daily practice.