... reasons. Item nonresponse, which occurs when a participant completes a case report form (CRF) or survey without providing a response for one ... Assurance,” CRFs typically incorporate checks to ensure that complete, valid ... These checks may prevent CRFs from being marked as complete if data are ...

... jointly review the current registry case report form (CRF). It is of paramount importance that the relevance ... data are often collected using electronic or paper CRFs that may have intellectual property protections, including copyright, ...

... data collection instruments, including recommended case report form (CRF) data points, classified by domain (e.g., adverse ... to communicate study parameters (e.g., eligibility information, CRFs) and (2) to exchange a core data set ...

... At the outset, any registry materials – such as CRFs, data definitions, and training manuals – that are translated ... any relevant registry, changes are made to the CRFs as science evolves over time, and the data ...