Impact of individual factors and personality trait on psychological problems of family members living with staff of a COVID-19 frontline hospital: A cross-sectional self-administered anonymous questionnaire survey.

Among family members of staff of a COVID-19 frontline hospital, lower extraversion, higher neuroticism, and fear of COVID-19 were associated with anxiety and depression. This questionnaire survey was conducted before wide-spread rollout of COVID-19 vaccination, so the findings of this study are expected to be applicable to other future novel infectious outbreaks.