Nighttime screen use, sleep quality, and smartphone addiction symptoms among medical students: an international cross-sectional study.

ABSTRACT:

Background

Nighttime screen use is associated with poor sleep and may represent an emerging public health concern. Medical students are a vulnerable group for harmful health behaviour due to demanding studies, while also playing a key role in future health promotion. The study examined the prevalence of nighttime screen use among medical students in different countries and explored associations with sleep and smartphone addiction symptoms.

Methods

The Medical Student Health Survey, an international cross-sectional study, was conducted at four sites in Germany (GER), Austria (AU), Hungary (HU), and Japan (JA). Nighttime screen use was assessed via five self-developed items, sleep via Pittsburgh Sleep Quality Index (PSQI), and smartphone addiction symptoms via Smartphone Addic

SUBMITTER: Liebig L 

PROVIDER: S-EPMC12920586 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature