Hi Matt &amp; all, <div><br></div><div>Thanks. My bad - that was a &quot;replicating my error&quot; error. Fixing it generates the following errors: </div><div>cem AGCYTYPE POPULATION region lblackproportion, tr(POLYEXAM)</div>
<div><div> &lt;istmt&gt;:  3499  cemStata() not found</div><div>r(3499);</div><div>(Stata 10 still seems to get stuck trying to find cem.)</div><div><br></div><div>And the same error as before in Stata 12:</div><div><div>
cem AGCYTYPE POPULATION region lblackproportion, tr(POLYEXAM)</div><div>reg lblackproportion POLYEXAM YP YEAR [iweight=cem_weights]</div><div>cem_weights not found</div><div>r(111);</div><div><br></div></div><div>Any other ideas how to troubleshoot?</div>
<div><br></div><div>Thanks and best, </div><div>Katelyn</div><div><br></div><br><div class="gmail_quote">On Fri, Jun 29, 2012 at 6:38 PM, Matt Blackwell <span dir="ltr">&lt;<a href="mailto:blackwel@fas.harvard.edu" target="_blank">blackwel@fas.harvard.edu</a>&gt;</span> wrote:<br>
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        Hi Katelyn,
    </div><div><br></div><div>Without taking too close a look, I think that the problem with the Stata 10 code is the space between &quot;tr&quot; and &quot;(&quot;. It should be &quot;<span>tr(POLYEXAM)&quot;. That might also be the problem in Stata 12. </span></div>
<div><span><br></span></div><div><span>Cheers,</span></div><div><span>Matt. </span></div><div><div class="h5">
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    <p style="color:#a0a0a8">On Friday, June 29, 2012 at 1:39 PM, Katelyn Sack wrote:</p>
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        <div><div><div><div class="h5"><div>Dear list, </div><div><br></div><div>When I try using cem in Stata 10,<b> </b>I get the error<b> &quot;</b>no variables defined in option treatment(), r(111);&quot; even though my syntax looks fine. (My command was &quot;cem  AGCYTYPE POPULATION region lblackproportion, tr (POLYEXAM).&quot;) The <a href="http://gking.harvard.edu/cem/" target="_blank">website</a> indicates it works in version 10. </div>

<div><br></div><div>When I try using it in Stata 12, I think the program gets a little farther. But I still get the error &quot;cem_weights not found&quot; after the commands:</div><div><div>cem  AGCYTYPE POPULATION region lblackproportion, tr (POLYEXAM)</div>

<div>reg lblackproportion POLYEXAM YP YEAR [iweight=cem_weights]</div><div><br></div><div>Any ideas how to troubleshoot? My best guess is that I skipped important pre-cem steps and the program is protesting that sort of human error. Perhaps the matched N (672) is too small and so I should simulate more data to produce more matches?</div>

<div><br></div><div>Many thanks, </div><div>Katelyn</div><div><br></div>-- <br><span style="font-family:arial,sans-serif;font-size:13px;border-collapse:collapse"><div>Katelyn Sack, Ph.D. candidate</div><div>University of Virginia </div>

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</blockquote></div><br><br clear="all"><div><br></div>-- <br><span style="font-family:arial,sans-serif;font-size:13px;border-collapse:collapse"><div>Katelyn Sack, Ph.D. candidate</div><div>University of Virginia </div></span><br>

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