Samer Hammoudeh

By Samer Hammoudeh, Wessam Gadelhaq and Ibrahim Janahi

Cohort studies are the analytical design of observational studies that are epidemiologically used to identify and quantify the relationship between exposure and outcome. Due to the longitudinal design, cohort studies have several advantages over other types of observational studies. The purpose of this chapter is to cover the various characteristics of prospective cohort studies. This chapter is divided into three main sections. In the first we introduce the concept and ranking of cohort studies, as well as the advantages and disadvantages. In the second we focus on the design of cohort studies, mainly its prospective aspect, and the distinguishing features from the retrospective type. The section also covers the essential characteristics of a cohort study design and its varied applications in medical research. In the third we go over examples of prospective studies in the medical field. For each, an overview of the study design is given, along with a random selection of study findings/impact, strengths and weaknesses.

Part of the book: Cohort Studies in Health Sciences

By Raghad Burjaq and Samer Hammoudeh

There is no doubt that the coronavirus disease 2019 pandemic has changed the world in unprecedented ways. Among its turbulent effects, it has impacted many aspects of the lives of individuals, ranging from their mental health to finances. As such, it is essential to determine the psychosocial factors at play and examine how they have impacted the lives of people around the world. This chapter examines psychosocial factors, such as depression, anxiety, and stress, which have been on the rise. Furthermore, the interplay of mental health factors and other stressors brought on by the pandemic has led to the concern that cases of suicidal ideation are also increasing. In response to the stay-at-home orders, family members spent unprecedented amounts of time in close contact with one another, which has had mental health repercussions. In addition, changes in the format of lesson delivery have been stress-inducing and have robbed many students of proper education. Another factor is unemployment, which has been on the rise since the start of the pandemic. Finally, rates of sexual and domestic violence have also increased, significantly impacting women. Exercise, limiting media exposure, counseling, and maintaining social networks are the strategies that have been identified to mitigate the effects of the psychosocial factors discussed in this chapter.

Part of the book: Psychosocial, Educational, and Economic Impacts of COVID-19