Direct Measurements of Smartphone Screen-Time: Relationships with Demographics and Sleep.

ABSTRACT:

Background

Smartphones are increasingly integrated into everyday life, but frequency of use has not yet been objectively measured and compared to demographics, health information, and in particular, sleep quality.

Aims

The aim of this study was to characterize smartphone use by measuring screen-time directly, determine factors that are associated with increased screen-time, and to test the hypothesis that increased screen-time is associated with poor sleep.

Methods

We performed a cross-sectional analysis in a subset of 653 participants enrolled in the Health eHeart Study, an internet-based longitudinal cohort study open to any interested adult (≥ 18 years). Smartphone screen-time (the number of minutes in each hour the screen was on) was measured continuously via smar

SUBMITTER: Christensen MA 

PROVIDER: S-EPMC5102460 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature