@inbook{2642348, author={Brenda Waning and Michael Montagne}, title={Appendix I: Flow Chart to Determine Appropriate Statistical Test to Analyze Data}, booktitle={Pharmacoepidemiology: Principles and Practice}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2001}, url={accesspharmacy.mhmedical.com/content.aspx?aid=2642348} }