Validity and reliability of the COVID-19 symptom index, an instrument evaluating severity of general and otolaryngological symptoms.
Jérôme René LechienCarlos-Miguel Chiesa-EstombaStephane HansChristian Calvo-HenriquezMiguel Mayo YanezManuel TucciaroneLuigi Angelo VairaSven SaussezAlberto M SaibenePublished in: Acta oto-laryngologica (2021)
The CSI is a reliable and valid patient reported outcome questionnaire for the evaluation of symptom severity of COVID-19 patients.