• Study Design
  Don't forget Wikipedia as a source for information. This site provides a nice explanation of study design with examples.

• Study Design - from the Oxford Centre for Evidence-Based Medicine

• Types of Studies - from the SUNY Downstate EBM Tutorial

• Type of Studies from NICHSR

• Evidence Pyramid and Study Design Duke University
  

Handout explaining the evidence pyramid and study design

• Brief introduction to study design

Camtasia video - PowerPoint slides with audio

• Cohort studies: marching towards outcomes. Grimes DA and Schultz KF. Lancet 359:341-345