<p>Your example question seems to be one of:</p>

<ul>
<li>experimental design and </li>
<li>applied statistical analysis, </li>
</ul>

<p>both of which are listed as appropriate topics in the <a href="https://stats.stackexchange.com/faq">faq</a>.  CV is the appropriate place to ask such a question. </p>

<p>However, also consider weighing in on the <a href="http://area51.stackexchange.com/proposals/34565/public-health-epidemiology">Public Health &amp; Epidemiology</a> proposal on Area51. While CV is currently the best place to ask your question, I find it reasonable to argue that the concerns, methodology, and terminology of public health practice and research are sufficiently specialized to warrant a specific Q&amp;A community (see a <a href="https://area51.meta.stackexchange.com/questions/2562/why-a-public-health-and-epidemiology-site">discussion by EpiGrad</a>). Also, there is more to public health than the applied statistics used in the field of epidemiology. For example, questions of health law (e.g. IRB and FDA concerns for your example study) and health policy (e.g. how to use the results of your example study to affect medical practice) are not appropriate on CV nor, so far, any other SE site. Unfortunately, interest in the Public Health &amp; Epidemiology proposal has plateaued for now.</p>
