Longitudinal analysis of the bidirectional relationship between screen time and sleep: Exploring the role of physical activity.

Background: Excessive screen time and poor sleep duration have significant implications for children's health and well-being. Understanding the dynamic relationship between screen time and sleep duration, as well as the impact of physical activity in this relationship, is essential for promoting healthy behaviours. The aims of this study were to: 1) investigate the bidirectional relationship between screen time and sleep duration in children, and 2) explore the mediating role of physical activity in these associations.

Sleep mediates the relationship between precarious employment and mental health.

Background: Current evidence suggests that precarious employment is a risk factor for poor mental health. Although the mechanisms underpinning this relationship are unclear, poor sleep has been proposed to have a role in this relationship. This study explored the mediating effects of poor sleep quality and duration on the relationship between precarious employment and mental health.

Precarious employment and associated health and social consequences; a systematic review.

Objective: This systematic review aims to identify, evaluate, and summarise the consequences of precarious employment.

Methods: We included studies published within the last ten years (Jan 2011-July 2021) that employed at least two of three key dimensions of precarious employment: employment insecurity, income inadequacy, and lack of rights and protection.

Results: Of the 4,947 initially identified studies, only five studies met our eligibility criteria.