Psychometric properties of the German version of Observer OPTION5.
Mara KölkerJanine ToppGlyn ElwynMartin HärterIsabelle SchollPublished in: BMC health services research (2018)
The results regarding inter- and intra-rater reliability were excellent on the total score level. Observer OPTION5 showed moderate concurrent validity using Observer OPTON12. The results are generally comparable to the results of the original English version of Observer OPTION5. The German version of Observer OPTION5 can be used in research and evaluation of clinical practice. Nevertheless, further testing is adviced.