id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-341097-c96hm610	Mayer, Craig S.	Analysis of data dictionary formats of HIV clinical trials	2020-10-05		.txt	text/plain	6899	366	57	To facilitate aggregation across studies, we defined three types of data dictionary (data element, forms, and permissible values) and created a simple information model for each type. The presented study is limited to data dictionary analysis, although the motivation is to later analyze a large body of past HIV data elements to inform data-driven consensus on CDEs. This study is part of a larger research project titled 'Identification of Research Common Data Elements in HIV/AIDS using data science methods' [12] . We use the term Forms Data Dictionary (or forms dictionary in shorter form) to refer to a data dictionary that provides a full list of titles and descriptions of all Case Report Forms (CRFs) used in the study (or other relevant metadata for data element grouping). Use of categorical data elements in research is extremely common and, as stated earlier, most studies would be expected to provide a permissible value dictionary.	./cache/cord-341097-c96hm610.txt	./txt/cord-341097-c96hm610.txt