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Non-inferior means "just as good"Easy to use non-inferiority calculator
As promised, a new non-inferiority trial calculator has been published in Research Engineer. Go the Non-Inferiority Trial or Calculators page to download it for free. Thank you!
Also, check out the flyers that we are going to start giving out! Thoughts? 
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The elusive equivalency concept is now user-friendlyDownload a free equivalency trial calculator
A new Equivalency Trial Calculator for both categorical and continuous outcomes is now available in Research Engineer! Check it out on both the Equivalency Trial page and the Calculators page. Non-inferiority calculator to come!
New pages for Research EngineerIncreased content validity for the website
Propensity score matching is a statistical methodology that is used in observation research designs. It also is very useful for controlling for confounding variables in multivariate models. A new page has been added describing its use in research.
I published all of the research calculators available in Research Engineer to one page for easier access. New pages are also available for internal consistency reliability and inter-rater reliability. If you use Research Engineer for purposes of regression analysis, then you have seen the methods analyses associated with residual analysis and meeting certain statistical assumptions like linearity, normality, and equal variances. New pages are available to give deeper insights into these important statistical assumptions. Click on a button below to get started! Thank you! 
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