Digital health literacy scores according to the characteristics of the sample. Box plot corresponded to the score of digital literacy on COVID-19 according to the characteristics of sex, age, country of residence, study area (Eng. & Tech. = Engineering sciences and technologies; Health Sc. = Life sciences and health; Basic Sc. = Basic Science; Social Sc. = Social sciences and humanities), level of education, satisfaction with the information on COVID-19, and the presence of chronic disease in the student (No Cron. Cond = no chronic disease; Cron. Cond. = chronic disease). Next to each category were placed the p values obtained by the Kruskall–Wallis non-parametric test (Ref = reference).