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    <title>topic Help with proc phreg in SAS Procedures</title>
    <link>https://communities.sas.com/t5/SAS-Procedures/Help-with-proc-phreg/m-p/181669#M46284</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;&lt;SPAN style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"&gt;I need to know how to interpret the analysis of maximum likelihood estimates output in SAS after using a phrec procedure with backwards selection.&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"&gt;Attached is an example output.&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"&gt;The code looks something like this:&lt;/SPAN&gt;&lt;/P&gt;&lt;P style="padding-left: 60px;"&gt;&lt;SPAN style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"&gt;proc phreg data="map.sas7bdat";&lt;/SPAN&gt;&lt;/P&gt;&lt;P style="padding-left: 60px;"&gt;&lt;SPAN style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"&gt;model survival*censor(1) = After_Blood_Return __hr_After_60_Blood_Loss After_60_Blood_Loss _0_min_After_40_Blood_Loss After_40_Blood_Loss Before_Hypotension&lt;/SPAN&gt;&lt;/P&gt;&lt;P style="padding-left: 60px;"&gt;&lt;SPAN style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"&gt;/selection=backward;&lt;/SPAN&gt;&lt;/P&gt;&lt;P style="padding-left: 60px;"&gt;&lt;SPAN style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"&gt;, run;&lt;/SPAN&gt;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Wed, 16 Jul 2014 19:09:21 GMT</pubDate>
    <dc:creator>cecypdel</dc:creator>
    <dc:date>2014-07-16T19:09:21Z</dc:date>
    <item>
      <title>Help with proc phreg</title>
      <link>https://communities.sas.com/t5/SAS-Procedures/Help-with-proc-phreg/m-p/181669#M46284</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;&lt;SPAN style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"&gt;I need to know how to interpret the analysis of maximum likelihood estimates output in SAS after using a phrec procedure with backwards selection.&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"&gt;Attached is an example output.&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"&gt;The code looks something like this:&lt;/SPAN&gt;&lt;/P&gt;&lt;P style="padding-left: 60px;"&gt;&lt;SPAN style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"&gt;proc phreg data="map.sas7bdat";&lt;/SPAN&gt;&lt;/P&gt;&lt;P style="padding-left: 60px;"&gt;&lt;SPAN style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"&gt;model survival*censor(1) = After_Blood_Return __hr_After_60_Blood_Loss After_60_Blood_Loss _0_min_After_40_Blood_Loss After_40_Blood_Loss Before_Hypotension&lt;/SPAN&gt;&lt;/P&gt;&lt;P style="padding-left: 60px;"&gt;&lt;SPAN style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"&gt;/selection=backward;&lt;/SPAN&gt;&lt;/P&gt;&lt;P style="padding-left: 60px;"&gt;&lt;SPAN style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"&gt;, run;&lt;/SPAN&gt;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Wed, 16 Jul 2014 19:09:21 GMT</pubDate>
      <guid>https://communities.sas.com/t5/SAS-Procedures/Help-with-proc-phreg/m-p/181669#M46284</guid>
      <dc:creator>cecypdel</dc:creator>
      <dc:date>2014-07-16T19:09:21Z</dc:date>
    </item>
    <item>
      <title>Re: Help with proc phreg</title>
      <link>https://communities.sas.com/t5/SAS-Procedures/Help-with-proc-phreg/m-p/181670#M46285</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Here's a good walk through of doing survival analysis with SAS&lt;/P&gt;&lt;P&gt;&lt;A href="http://www.ats.ucla.edu/stat/sas/seminars/sas_survival/" title="http://www.ats.ucla.edu/stat/sas/seminars/sas_survival/"&gt;SAS Seminar: Introduction to Survival Analysis in SAS&lt;/A&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Your question is a bit too broad to answer otherwise, in my opinion.&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Wed, 16 Jul 2014 19:37:48 GMT</pubDate>
      <guid>https://communities.sas.com/t5/SAS-Procedures/Help-with-proc-phreg/m-p/181670#M46285</guid>
      <dc:creator>Reeza</dc:creator>
      <dc:date>2014-07-16T19:37:48Z</dc:date>
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