Developing a cyberchondria severity scale to promote self-care among university students during COVID-19.

Cyberchondria is a hybrid term signifying a state in which individuals compulsively search for health-related information online because of health distress or anxiety, further aggravating their worries. This study develops a Cyberchondria Severity Scale (CSS) to assess the current situation of university students. Exploratory factor analysis (EFA) was conducted using 145 valid questionnaires. Subsequently, a nationwide survey was conducted at various universities in Taiwan, and 802 questionnaires were used for confirmatory factor analysis (CFA). The EFA led to the development of a CSS for college students with four constructs: increased anxiety (α = 0.91), obsessive-compulsive hypochondria (α = 0.87), perceived controllability (α = 0.88), and online physician-patient interaction (α = 0.86), with a Cronbach's alpha of 0.92 and variance of 66.81%. The CFA indicated that item reliability ranged from 0.50 to 0.86, factor loadings ranged from 0.71 to 0.93, and the composite reliability for latent variables ranged from 0.83 to 0.90 (p < .001). The extracted average variance ranged from 0.46 to 0.60. There were significant differences in various dimensions: perceived controllability had the highest score and obsessive-compulsive hypochondria had the lowest (F