Sections View Full Chapter Figures Tables Videos Annotate Full Chapter Figures Tables Videos Supplementary Content +++ Introduction ++ Table Graphic Jump Location|Download (.pdf)|Print RESEARCH QUESTION CHART Is there a difference between means (or medians)? 1 independent variable: 2 levels 1 independent variable: ≥3 levels 2 or more independent variables B1 B2 B3 Is there a difference in proportions? B4 Is there an association between variables? B5 Is there a predictive relationship between variables? B6 Are measurements reliable? B7 ++ ++ ++ ++ ++ ++ Your Access profile is currently affiliated with [InstitutionA] and is in the process of switching affiliations to [InstitutionB]. Please select how you would like to proceed. Keep the current affiliation with [InstitutionA] and continue with the Access profile sign in process Switch affiliation to [InstitutionB] and continue with the Access profile sign in process Get Free Access Through Your Institution Learn how to see if your library subscribes to McGraw Hill Medical products. Subscribe: Institutional or Individual Sign In Error: Incorrect UserName or Password Username Error: Please enter User Name Password Error: Please enter Password Sign in Forgot Password? Forgot Username? Sign in via OpenAthens Sign in via Shibboleth You already have access! Please proceed to your institution's subscription. Create a free profile for additional features.