🌐EnglishEnglishDeutschFrançaisPortuguêsРусскийفارسیไทย中文日本語EntityQ4113800· pop 9· linked from 114 articlesinternal validityextent to which a piece of evidence supports a claim about cause and effectAvailable in 9 languagesFrançais中文日本語РусскийPortuguêsUkrainianفارسیไทยvia Wikidata sitelinks · CC0Connectionsdependent and independent variablesEntitydigital object identifierEntityCategoriesCausal inferenceValidity (statistics)