“…Determining efficacy of treatments accurately and in a reproducible manner is crucial, thus clinicians remain concerned about the selection criteria of the most repeatable scale and its psychometric properties 12 , 13 ) . Furthermore, measuring UL’s impairment in chronic stroke is essential for rehabilitation 12 , 13 ) , and several outcome measures (OM) have been discussed with regard to the level of disability and relevance to UL progress 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ) . OM with good psychometric properties and feasible administration time conducted by appropriately trained staff are recommended for stroke by national clinical guidelines 25 ) ; however, recommendations for tools or specific raters are not provided.…”