There are many excellent books on the topic of clinical epidemiology. Our favorites are:
- Clinical Epidemiology: the Essentials. Fletcher & Fletcher. 2005
- Epidemiology: An Introduction. Rothman. 2012
Both books provide a very good introduction to the field.
Besides, we can recommend the following:
- Designing Clinical Research. Hulley, Cummings, Browner, Grady, and Newman. 2007
- Clinical Epidemiology: How to Do Clinical Practice Research. Haynes, Sackett, Guyatt, and Tugwell. 2006
- Clinical Epidemiology: Principles, Methods, and Applications for Clinical Research. Grobbee and Hoes. 2009
- Modern Epidemiology. Rothman, Greenland, and Lash. 2008