National Health Interview Survey Ratio RATIO The quotient of one quantity divided by another, with the same units of measurement. Ratio Quotient of quantities of the same kind for different components within the same system. Ratio {Ratio} C0456603 Ratio CDISC Quantitative Concept {RATIO} C44256 Clinical Data Interchange Standards Consortium Terminology CDISC SDTM Unit for Vital Sign Result Terminology CDISC SDTM Terminology Quotient CDISC SDTM Unit of Measure Terminology CDISC SEND Terminology CDISC SDTM Pharmacokinetic Parameter Unit of Measure Terminology