The SDW provides an opportunity for biomedical researchers who are designing a study to meet with members of the biostatistics staff at Stanford and collaboratively develop a research plan. The researchers typically provide a brief orientation to the problem they are trying to solve and then have a collegial conversation with world class experts on all aspects of study design including sample size, statistical analysis methods and data management. The conversations always center on the idea of how to design the optimal study, which affords the opportunity to make inferences to the world using as few subjects as possible. Researchers leave the SDW with well thought through, specific aims and the core methods sections needed for preparing grants and conducting a successful research project. The SDW forms long-term teams to assure that biostatisticians can see a study through to its completion.