Glossary of terms used in health research

Glossary of terms used in health research - K

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Kappa statistic
- Wikipedia
  A measure of the extent to which observers achieve agreement beyond the level expected to occur by chance alone. Kappa can take values from 0 (poor agreement) to 1.0 (perfect agreement).
Key informant
- Person with the particular background, knowledge, or special skills required to contribute information relevant to topics under examination in an evaluation.
Key words
- A string of words attached to an article to be used to index or code the article in a database.