Exploratory research is one which aims at providing insights into and an understanding of the problem faced by the researcher. Descriptive research, on the other hand, aims at describing something, mainly functions and characteristics. The research design is defined as a framework for carrying out research activities in different fields of study. The research design is classified into two important categories i. Conclusive research is further subdivided into descriptive and casual research.
The Difference Between Control Group and Experimental Group
Causal or Experimental Research Designs
Cohort and case-control methodologies are the main tools for analytical epidemiological research. Other important types of epidemiological studies mainly for generating hypotheses include cross-sectional and ecological, or correlation studies. The conclusions that can be drawn from findings of these types of studies are, however, much weaker compared to those of cohort and case-control studies. This is not to say that findings from cohort and case-control studies always reflect true associations which can be universally generalized. Epidemiological research is, to a large extent, of an observational character as opposed to experimental research.
Causal Marketing Research
Case study and experiment, having a definite difference between them, refer to two very different research methods used in various disciplines. These research methods allow the researcher to study and analyze the subject through various approaches. Having a variety of methods in research allows the researcher to gain both qualitative and also quantitative data. He is also able to cross check the data, through which he will be able to assign more validity to the conclusions and overall findings of the research.
A case—control study also known as case—referent study is a type of observational study in which two existing groups differing in outcome are identified and compared on the basis of some supposed causal attribute. A case—control study produces only an odds ratio, which is an inferior measure of strength of association compared to relative risk. The case—control is a type of epidemiological observational study. An observational study is a study in which subjects are not randomized to the exposed or unexposed groups, rather the subjects are observed in order to determine both their exposure and their outcome status and the exposure status is thus not determined by the researcher. Porta's Dictionary of Epidemiology defines the case—control study as: an observational epidemiological study of persons with the disease or another outcome variable of interest and a suitable control group of persons without the disease comparison group, reference group.