Читать книгу Statistics in Nutrition and Dietetics - Michael Nelson - Страница 40

The summary below provides a brief overview of some of the types of study designs available. There are many more designs, of course, that address complex issues of multiple factors influencing multiple outcomes, with corresponding statistical analysis, but these are dealt with in more advanced textbooks on research design and analysis. The list below repeats some of the material covered in Section 1.2 on logic, but goes into more detail in relation to study design.

The principle aim is to conduct studies that are free from bias and based on relevant measures of exposure and outcome so that the hypothesis can be tested effectively.