https://iserredex.essex.ac.uk/support/https://iserredex.essex.ac.uk/support/support/favicon.ico?15995719382021-08-17T10:27:52ZUnderstanding Society User SupportUnderstanding Society User Support - Support #1572: Weighting in multilevel modelling in R Studiohttps://iserredex.essex.ac.uk/support/issues/1572?journal_id=62062021-08-17T10:27:52ZUnderstanding Society User Support Teamusersupport@understandingsociety.ac.uk
<ul><li><strong>Status</strong> changed from <i>New</i> to <i>Feedback</i></li><li><strong>Assignee</strong> set to <i>Olena Kaminska</i></li><li><strong>% Done</strong> changed from <i>0</i> to <i>50</i></li><li><strong>Private</strong> changed from <i>Yes</i> to <i>No</i></li></ul><p>Hello,</p>
<p>If you are using the extra five minute sample data for longitudinal analysis for waves 1, 3, 5, 7 & 9 and your analysis does not include any data from the self-completion questionnaire, the i_ind5mus_lw is the correct weight to use. However, if you are including data from the self-completion questionnaire you can either use this weight or the self-completion longitudinal weight i_indscus_lw. You can read the Weighting FAQ in the user guide for more detailed discussion about this. <a class="external" href="https://www.understandingsociety.ac.uk/documentation/mainstage/user-guides/main-survey-user-guide/weighting-guidance">https://www.understandingsociety.ac.uk/documentation/mainstage/user-guides/main-survey-user-guide/weighting-guidance</a></p>
<p>I am assigning this issue to our survey methodologist if she has any additional advice.</p>
<p>But please be aware we do not generally advice on analysis issues including which is the best estimation method to use or which software command to use. There other statistics and software specific user forums that deal with such issues. Our remit is advising on Understanding Society survey data, data management and weighting and survey design issues.</p>
<p>Hope this helps.</p>
<p>Best wishes,<br />Understanding Society User Support Team</p> Understanding Society User Support - Support #1572: Weighting in multilevel modelling in R Studiohttps://iserredex.essex.ac.uk/support/issues/1572?journal_id=62232021-08-31T08:15:34ZOlena Kaminskaolena@essex.ac.uk
<ul></ul><p>Nora,</p>
<p>Thank you for your question. One of your levels needs to be PSU - this will account for clustering. Stratification is generally omitted in multilevel modelling which just makes them more conservative (wider CIs).<br />In terms of weights could you clarify which levels you use in your model please?</p>
<p>Thanks,<br />Olena</p> Understanding Society User Support - Support #1572: Weighting in multilevel modelling in R Studiohttps://iserredex.essex.ac.uk/support/issues/1572?journal_id=62242021-08-31T08:36:17ZNora Chabach
<ul></ul><p>Hi,</p>
<p>Since I'm doing a longitudinal research project my level 1 is time/wave and level 2 is individuals and then following your advice level 3 would be clustering/PSU.</p>
<p>Thanks,<br />Nora</p> Understanding Society User Support - Support #1572: Weighting in multilevel modelling in R Studiohttps://iserredex.essex.ac.uk/support/issues/1572?journal_id=62262021-09-02T08:39:13ZOlena Kaminskaolena@essex.ac.uk
<ul></ul><p>Nora,</p>
<p>The weights that we provide to users are the product of different parts, so essentially you will need to extract these parts. Unfortunately, because the weights are created in the optimal way this is possible for 'us' weights but not possible for 'ub' and 'ui' weights.</p>
<p>My suggestion is the following. First try with this approach, using only 'us' weights:<br />- Use design weight from wave 1 (indsamp file) for the PSU level.<br />- Divide wave 1 enumeration weight (a_psnenus_xw) by individual design weight (indsamp file) - the result is your individual level weight.<br />- Divide each weight by wave 1 enumeration weight (a_psnenus_xw) - the result is your time level weight.</p>
<p>I hope this helps,<br />Olena</p> Understanding Society User Support - Support #1572: Weighting in multilevel modelling in R Studiohttps://iserredex.essex.ac.uk/support/issues/1572?journal_id=62742021-10-12T13:20:17ZUnderstanding Society User Support Teamusersupport@understandingsociety.ac.uk
<ul><li><strong>Status</strong> changed from <i>Feedback</i> to <i>Resolved</i></li><li><strong>Assignee</strong> deleted (<del><i>Olena Kaminska</i></del>)</li><li><strong>% Done</strong> changed from <i>50</i> to <i>100</i></li></ul>