Research

Definition According to WHO definition it is “a quantitative and qualitative description of the health citizens and the factors which

Health The World Health Organization (WHO) defined health in its broader sense in 1946 as “a state of complete physical,

Chronological organization The discussion of the research/articles is ordered according to an historical or developmental context The classic studies

Broadly epidemiological studies may be classified into two broad types, depending upon the type of exposure:- * Observational (non-experimental) studies

The condition of being subjected to something, as to infectious agents, extremes of weather, or radiation, which may have a

Types of descriptive studies * Case series studies * Community diagnosis or need assessment * Descriptive cross-sectional studies * Ecological descriptive studies * Epidemiological description

Direction of study:  Exposure and outcome at the same time. Strength of association:   Strength of association in cross-sectional study is

Features * One important characteristic of analytical study is using comparison group for arriving a conclusion. * When we give a comparison

Direction of study:  Exposure to outcome. Strength of association:   Estimates risk or rate directly. Strong relation between exposures to outcome.

Analytical studies are further sub-types depending upon the study groups and time. Commonly used analytical studies are as follows: * Cross-sectional