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Consistency, a subcategory of accuracy, refers to

the need to obtain and use data that are clear and well defined enough to yield similar results in similar analyses. For example, if data are entered at multiple sites, inconsistent interpretation of data entry rules can lead to data that, taken as a whole, are unreliable.[1]


Consistency is

[l]ogical coherency among all integrated parts: also, adherence to a given set of instructions or rules.[2]


Consistency is

[t]he relation between two specifications that holds when it is possible for at least one example of a product to exist that can conform to both of the specifications.[3]


  1. Assessing the Reliability of Computer-Processed Data, at 5.
  2. Auditing and Financial Management: Glossary of EDP Terminology, at 4.
  3. ITU, "Compendium of Approved ITU-T Security Definitions," at 12 (Feb. 2003 ed.) (full-text).