Questionnaires and Schedules

Questionnaires and Schedules

The research process is incomplete without the collection of data, which starts after the identification of the research problems and chalking out research design. There are several methods involved in … Read more

Primary Data and Secondary Data

Primary Data and Secondary Data

There are two major approaches to gathering information about a situation, person, problem or phenomenon. When you undertake a research study, in most situations, you need to collect the required … Read more

Types of Bias in Epidemiology

Types of Bias in Epidemiology

Common Types of Bias Types of bias include selection bias, detection bias, information (observation) bias, misclassification, and recall bias. Selection Bias Detection Bias Information (observation) Bias Misclassification a) Non-differential (random) … Read more