Dear Sien,<br><br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div id=":1jn">I have a question on the option of &#39;covariate&#39; in the &#39;multiple regression&#39;<br>

design in the 2nd level. There are two places for &#39;covariate&#39;, one under<br>
&#39;multiple regression&#39;, the other one is at the same level. I am interested in<br>
how the brain image is correlated with age and bmi, so I put the two variables<br>
in as covariates. However, when I put them in the covariates under &#39;multiple<br>
regression&#39; or outside the &#39;multiple regression&#39;, or one under and one outside,<br>
they produced same results. Is it supposed to be like this or did I something<br>
wrong?</div></blockquote></div><br><div>In recent versions of SPM (including SPM8), there is no difference between putting the covariate in or outside of the multiple regression—so it&#39;s good that you&#39;ve gotten the same results. :)</div>
<div><br></div><div>Best regards,</div><div>Jonathan</div>