Field Trials

Field Trials

Experimental studies set out to alter, rather than just observe, relevant exposures of interest, and to assess over time their impact on health status or disease outcomes.  The field trial is the one such type of interventional study designed to … Read more

Cross-Sectional Study

Cross-Sectional Study

A cross-sectional study (also known as a cross-sectional analysis, transverse study, prevalence study) is a type of observational study that analyzes data from a population, or a representative subset, at a specific point in time. It examines the relationship between diseases (or other health-related states) and other … Read more

Branches of Epidemiology

Branches of Epidemiology

Epidemiology is the study of how the disease is distributed in populations and the factors that influence or determine this distribution. It is defined as “the study of the distribution and determinants of health-related states or events in specified populations … Read more

Epidemiology- History, Objectives and Types

Epidemiology- History, Objectives and Types

Epidemiology, as defined by Last, is “the study of the distribution and determinants of health-related states or events in specified populations, and the application of this study to the prevention and control of health problems”. Epidemiologists are concerned not only … Read more