https://iserredex.essex.ac.uk/support/https://iserredex.essex.ac.uk/support/support/favicon.ico?15995719382017-03-30T08:59:12ZUnderstanding Society User SupportUnderstanding Society User Support - Support #758: weights for pooled cross-sections over waves (a)-(f) https://iserredex.essex.ac.uk/support/issues/758?journal_id=25802017-03-30T08:59:12ZVictoria Nolanvlnolan@essex.ac.uk
<ul><li><strong>Status</strong> changed from <i>New</i> to <i>In Progress</i></li><li><strong>Assignee</strong> changed from <i>Victoria Nolan</i> to <i>Nico Ochmann</i></li><li><strong>% Done</strong> changed from <i>0</i> to <i>10</i></li><li><strong>Private</strong> changed from <i>Yes</i> to <i>No</i></li></ul><p>Dear Nico,</p>
<p>Many thanks for your enquiry, I am passing it on to our weighting team to look into.</p>
<p>Best wishes, Victoria</p>
<p>On behalf of the Understanding Society data user support team</p> Understanding Society User Support - Support #758: weights for pooled cross-sections over waves (a)-(f) https://iserredex.essex.ac.uk/support/issues/758?journal_id=26352017-04-27T12:19:43ZPeter Lynnplynn@essex.ac.uk
<ul><li><strong>Target version</strong> set to <i>X M</i></li><li><strong>% Done</strong> changed from <i>10</i> to <i>50</i></li></ul><p>Nico,</p>
<p>That would be a correct weight to use, in the sense that it will give population representation when using all 4 samples together. But note that your analysis will then only include people who participated at wave 6.</p>
<p>An alternative is for you to derive a new weight variable, which consists of f_indinui_xw for the wave 6 observations, e_indinub_xw for the wave 5 observations, and so on. See this note, which may help: <a class="issue tracker-3 status-5 priority-4 priority-default closed" title="Support: Pooled Cross-Sectional Analysis (Closed)" href="https://iserredex.essex.ac.uk/support/issues/494">#494</a>.</p>
<p>Peter</p> Understanding Society User Support - Support #758: weights for pooled cross-sections over waves (a)-(f) https://iserredex.essex.ac.uk/support/issues/758?journal_id=26422017-04-28T18:53:24ZNico Ochmannnico.ochmann@postgrad.manchester.ac.uk
<ul></ul><p>Hi Peter,</p>
<p>I appreciate your reply very much. I have read your nice little note you coauthored with Olena. It is quite helpful. Let me first write this to make sure I properly understood your note. It seems to me that although wave 6 has been released, I do not get around this additional wrinkle of rescaling because I am pooling data from all six waves. Given that, I focus on Box 2 of your note. So, I generate for the years 2009-2015 strata_year and psu_year following your coding. For the outcome variable, I replace jbstat with paygu_dv and do the same for all seven years. Now and most important, I must derive the new weight variable given f_indinui_xw for wave 6 and e_indinub_xw for wave 5 etc. At this point I am not quite sure how to proceed and I would certainly appreciate it if you gave me a minor hint in one or two coding lines as to how to combine the original weights f_indinui_xw and e_indinub_xw (let's just stick with the two wave example) into one new weight variable. I looked at the online 'Intro to USoc using Stata' course, which is an excellent resource but it does not have any hints on weighting procedures beyond one wave.</p>
<p>If you happen to have any other resources with regard to my issue, please feel free to make any suggestions.</p>
<p>Thank you very much!</p>
<p>Nico</p> Understanding Society User Support - Support #758: weights for pooled cross-sections over waves (a)-(f) https://iserredex.essex.ac.uk/support/issues/758?journal_id=26452017-05-02T13:11:27ZVictoria Nolanvlnolan@essex.ac.uk
<ul><li><strong>Status</strong> changed from <i>In Progress</i> to <i>Feedback</i></li><li><strong>Assignee</strong> changed from <i>Nico Ochmann</i> to <i>Peter Lynn</i></li><li><strong>% Done</strong> changed from <i>50</i> to <i>60</i></li></ul> Understanding Society User Support - Support #758: weights for pooled cross-sections over waves (a)-(f) https://iserredex.essex.ac.uk/support/issues/758?journal_id=26932017-05-26T15:43:43ZPeter Lynnplynn@essex.ac.uk
<ul><li><strong>% Done</strong> changed from <i>60</i> to <i>70</i></li></ul><p>Nico,</p>
<p>When you pool the data, let's assume you add to each record a variable, wave, to indicate from which wave the record came. Then, you could create the weight with syntax like this:</p>
<p>ge newwgt= f_indinui_xw if wave==6<br />replace newwgt= e_indinub_xw if wave==5</p>
<p>Peter</p> Understanding Society User Support - Support #758: weights for pooled cross-sections over waves (a)-(f) https://iserredex.essex.ac.uk/support/issues/758?journal_id=26942017-05-26T15:43:57ZPeter Lynnplynn@essex.ac.uk
<ul><li><strong>Assignee</strong> changed from <i>Peter Lynn</i> to <i>Nico Ochmann</i></li></ul> Understanding Society User Support - Support #758: weights for pooled cross-sections over waves (a)-(f) https://iserredex.essex.ac.uk/support/issues/758?journal_id=26962017-06-01T12:08:47ZNico Ochmannnico.ochmann@postgrad.manchester.ac.uk
<ul></ul><p>Hi Peter, <br />thanks a lot for your reply. I pooled the data for all six waves and added for each record a wave variable. I then went ahead and generated my newwgt variable as follows:<br />gen newwgt = indinui_xw if wave==6 <br />replace newwgt = indinub_xw if wave==5 <br />replace newwgt = indinub_xw if wave==4 <br />replace newwgt = indinub_xw if wave==3 <br />replace newwgt = indinub_xw if wave==2 <br />replace newwgt = indinus_xw if wave==1 <br />Last but not least, I run logrealhourlywage on x1 x2 [pw=newwgt], cluster(pidp) <br />Is this reasonable or am I still completely off? <br />I might have to stop my at your seminar on weighting if I am doing this wrong. <br />Thanks Peter!</p> Understanding Society User Support - Support #758: weights for pooled cross-sections over waves (a)-(f) https://iserredex.essex.ac.uk/support/issues/758?journal_id=27182017-06-07T15:16:48ZPeter Lynnplynn@essex.ac.uk
<ul></ul><p>Looks fine!</p> Understanding Society User Support - Support #758: weights for pooled cross-sections over waves (a)-(f) https://iserredex.essex.ac.uk/support/issues/758?journal_id=27232017-06-13T20:15:12ZNico Ochmannnico.ochmann@postgrad.manchester.ac.uk
<ul></ul><p>Thanks a lot Peter!</p>
<p>I appreciate your help and expertise very much.</p>
<p>Have a great week.</p> Understanding Society User Support - Support #758: weights for pooled cross-sections over waves (a)-(f) https://iserredex.essex.ac.uk/support/issues/758?journal_id=27382017-06-15T14:08:16ZVictoria Nolanvlnolan@essex.ac.uk
<ul><li><strong>Status</strong> changed from <i>Feedback</i> to <i>Closed</i></li><li><strong>% Done</strong> changed from <i>70</i> to <i>100</i></li></ul>