For research to be effective, it is essential that every aspect of the study is well planned. Health Science Research has been written to help researchers from all disciplines conduct their studies with this kind of integrity. Each chapter covers a specific area fo conducting a study, including: - formulating the research question - preparing a grant application - subject recruitment - data collection and analysis - interpreting the results of the study. This informative text is designed to be a user friendly research, reference and study tool. It has been organised into eight chapters, each of which covers a specific area of conducting a research study. This book will be of particular value to scientists, research assistants, qualified or trainee physicians, nurses and allied health workers. The book will also be an essential companion for students in all disciplines who want to learn more about how to do good research.
Calculating the Sample Size
Calculating the Sample Size[Page 127]
The objectives of this section are to understand:
- the concept of statistical power and clinical importance;
- how to estimate an effect size;
- how to calculate the minimum sample size required for different outcome measurements;
- how to increase statistical power if the number of cases available is limited;
- valid uses of internal pilot studies; and
- how to adjust sample size when ...