For example, statistical analysis may have shown that birthrates in African countries are increasing.
A case study on one or two specific countries becomes a powerful and focused tool for determining the social and economic pressures driving this.
Whilst it will not answer a question completely, it will give some indications and allow further elaboration and hypothesis creation on a subject.
The case study research design is also useful for testing whether scientific theories and models actually work in the real world.
Constantly refer back to your bullet points so that you do not lose focus.
It is always a good idea to assume that a person reading your research may not possess a lot of knowledge of the subject so try to write accordingly.
Basically, a case study is an in depth study of a particular situation rather than a sweeping statistical survey.
It is a method used to narrow down a very broad field of research into one easily researchable topic.
In the design of a case study, it is important to plan and design how you are going to address the study and make sure that all collected data is relevant.
Unlike a scientific report, there is no strict set of rules so the most important part is making sure that the study is focused and concise; otherwise you will end up having to wade through a lot of irrelevant information.