CDISC-Gloss – A means to capture data (e.g., questionnaire, diary) plus all the information and documentation that supports its use. NOTE: Generally, instruments include clearly defined methods and instructions for administration or responding, a standard format for data collection, and well-documented methods for scoring, analysis, and interpretation of results. [from PRO Draft Guidance]. Compare to questionnaire, survey (see Comments on Draft PRO Guidance, April 4, 2006, by ISOQOL, p. 8).