General Study Objectives

摘要: This chapter provides advice on the identification, justification, and formulation of general study objectives. There are five major types research topics that can be addressed: diagnostic, etiognostic, intervention-prognostic, descriptive-prognostic, methods-oriented topics. Within each type we discuss in clinical medicine separately from community medicine. Commonly, researcher has many questions, perhaps as a result previously conducted research, but needs to include into rationale interests stakeholders, virtual importance for public health, availability resources. Decisions do may require an updated insight existing evidence topic with aim identifying knowledge gaps. We therefore briefly methods literature review. One considers at this earliest stage planning not all requires new data collection; other potential sources databases, joining ongoing studies.