10.23669/SIHKQ9Jokić-Begić, NatašaNatašaJokić-Begić0000-0003-2597-535XUniversity of Zagreb, Faculty of Humanities and Social SciencesLauri Korajlija, AnitaAnitaLauri Korajlija0000-0001-8561-9870University of Zagreb, Faculty of Humanities and Social SciencesMikac, UnaUnaMikac0000-0001-9369-6462University of Zagreb, Faculty of Humanities and Social SciencesData for: Cyberchondria in the age of COVID-19CROSSDA2020Social SciencesCLINICAL PSYCHOLOGYCOVID-19cyberhondriadisease preventionsafety behavioursINFORMATION NEEDSPERSONAL HYGIENEPsychologyCROSSDAUniversity of Zagreb, Faculty of Humanities and Social SciencesCroatian Social Science Data ArchiveUniversity of Zagreb Faculty of Humanities and Social Sciences2020-11-232021-04-302020-02-24/2020-03-012020-03-19/2020-03-25Numeric10.1371/journal.pone.0243704148103text/tab-separated-values1.1<img alt="Creative Commons License" src="https://i.creativecommons.org/l/by/4.0/88x31.png"> This work is licensed under a Creative Commons Attribution 4.0 International License.The aim of this study was to examine how cyberchondria is related to changes in levels of COVID-19 concern and safety behaviours among persons living in Croatia during the period in which the first COVID-19 case was identified and when the country recorded its first fatality. Repeated cross-sectional data collection was conducted during two waves over a period of three weeks (N1 = 888; N2 = 966). The first began on the day of the first confirmed case of COVID-19 in Croatia (February 24th, 2020) and the second wave began three weeks later, on the day the first COVID-19 fatality was recorded in Croatia (March 19th, 2020). Participants completed an online questionnaire regarding various COVID-19 concerns and safety behaviours aimed at disease prevention (information seeking, avoidance and hygiene) and a measure of cyberchondria (Short Cyberchondria Scale, SCS).