Unlike laboratory sciences in which a series of smaller thematic experiments can be undertaken sequentially, answering questions in epidemiology often requires a single project involving a large sample. The interval from conception of a project to its completion, particularly with prospective designs, can easily exceed time frames for the degree program itself. Because an epidemiologist conducting a large study has only one chance to get the details right regarding fundamental issues of sampling and measurement, a sound and complete research proposal is seen as an invaluable scientific document in its own right. The scientific worth of a good proposal, when considered alongside the learning that occurs and the time needed to prepare such a document, together justify the product as one that is worthy of submission as a thesis in partial fulfillment of the requirements of a Masters of Science degree. In view of the above, the program encourages students to consider a proposal thesis when it is suitable to the student and the topic.
Proposals are most valuable when they lead to actual research projects.
Thus, they should be written in the spirit of intended submission for funding and eventual execution of the project. The program encourages students to phrase a proposal as part of a larger program in research that will take them to their next career stage. For example, a proposal can be planned for possible execution as a Ph.D. project or, for those entering junior positions in academic medicine, an early independent research project. It should involve intellectual effort, library and field work substantially equal to M.Sc. theses that have substantive as opposed to methodological objectives. The detailed requirements depend on the student's existing skill set and on the proposed topic and source of data.