https://iserredex.essex.ac.uk/support/https://iserredex.essex.ac.uk/support/support/favicon.ico?15995719382017-02-14T17:23:32ZUnderstanding Society User SupportUnderstanding Society User Support - Support #723: Combining USOC/BHPS and zero weightshttps://iserredex.essex.ac.uk/support/issues/723?journal_id=24582017-02-14T17:23:32ZVictoria 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>Olena Kaminska</i> to <i>David Hussey</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>Assigned to Peter.</p> Understanding Society User Support - Support #723: Combining USOC/BHPS and zero weightshttps://iserredex.essex.ac.uk/support/issues/723?journal_id=24592017-02-14T22:58:04ZPeter 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>80</i></li></ul><p>David,</p>
<p>Re. point 1), this all looks broadly fine to me. The only caveat is that the two sets of weights for the different samples are designed to represent slightly different populations. The BHPS weights represent the UK population excluding any households consisting solely of people who entered the country since 2001 or are descended from such immigrants, while the UKHLS weights represent the UK population excluding any households consisting solely of people who entered the country since 2009 or are descended from such immigrants. In principle, one should up-weight the UKHLS post-2001 immigrant households to compensate for their absence in BHPS (this is exactly what we do in the “ub” weights), but I’m not sure how much difference this would make in practice.</p>
<p>Re. point 2), zero weights will arise whenever a household does not contain any adult who has been enumerated at every wave since the relevant start point (wave 2 in the case of “ub” weights; wave 1 for “us” weights). This is because the xw weights are derived from the lw weights and you need at least one person to have a non-zero lw weight in order for it to be shared to the other household members.</p>
<p>HTH,</p>
<p>Peter</p> Understanding Society User Support - Support #723: Combining USOC/BHPS and zero weightshttps://iserredex.essex.ac.uk/support/issues/723?journal_id=24772017-02-27T09:46:53ZVictoria Nolanvlnolan@essex.ac.uk
<ul><li><strong>Status</strong> changed from <i>In Progress</i> to <i>Closed</i></li><li><strong>% Done</strong> changed from <i>80</i> to <i>100</i></li></ul> Understanding Society User Support - Support #723: Combining USOC/BHPS and zero weightshttps://iserredex.essex.ac.uk/support/issues/723?journal_id=24862017-02-27T14:32:27ZDavid Hussey
<ul></ul><p>Many thanks for the reply. I have a couple of follow-up questions re point (1):</p>
<p>1) May I just clarify that there isn't a ub weight for the Youth data?</p>
<p>2) The respsective profiles of w2 youth participants weighted by the two weights - b_ythscus_xw and b_ythscbh_xw - are rather different, which is partly why I queried the method I used to combine them. E.g. the aren't any 10 year olds in the BHPS sample (just 11-15 year olds), the proportion in owner occupied tenures is 8 ppts higher in the BHPS sample compared to the USOC sample and the proportion in urban areas is around 6 ppts lower. Given that the two are meant to be representing very similar populations the differences look rather large. Is there an explanation? Should we be concerned about this or is it ignorable?</p> Understanding Society User Support - Support #723: Combining USOC/BHPS and zero weightshttps://iserredex.essex.ac.uk/support/issues/723?journal_id=24872017-02-27T14:34:16ZVictoria Nolanvlnolan@essex.ac.uk
<ul><li><strong>Status</strong> changed from <i>Closed</i> to <i>In Progress</i></li><li><strong>% Done</strong> changed from <i>100</i> to <i>80</i></li></ul> Understanding Society User Support - Support #723: Combining USOC/BHPS and zero weightshttps://iserredex.essex.ac.uk/support/issues/723?journal_id=25142017-03-06T17:14:10ZPeter Lynnplynn@essex.ac.uk
<ul></ul><p>David,</p>
<p>1. n_ythscub_xw exists from wave 3 onwards, but not for wave 2.</p>
<p>2. I don't know the answer and I am concerned! I'm looking into it and will get back to you. There may be an error in the weight for the BHPS sample.</p>
<p>Peter</p> Understanding Society User Support - Support #723: Combining USOC/BHPS and zero weightshttps://iserredex.essex.ac.uk/support/issues/723?journal_id=26362017-04-27T12:53:17ZVictoria Nolanvlnolan@essex.ac.uk
<ul><li><strong>Assignee</strong> changed from <i>David Hussey</i> to <i>Peter Lynn</i></li></ul> Understanding Society User Support - Support #723: Combining USOC/BHPS and zero weightshttps://iserredex.essex.ac.uk/support/issues/723?journal_id=30612017-10-19T10:33:22ZOlena Kaminskaolena@essex.ac.uk
<ul></ul><p>With regard to number 1: you can combine the weights on your own and your thinking is correct. Your weight will be close to ours but imperfect in underrepresenting recent immigrants.<br />With regard to number 2: thank you for pointing this error to us. We were aware of this and this was corrected for all other weights but for the cross-sectional youth weight for w2. This is now corrected and the updated weight will be released with w7 release. Thanks again.</p> Understanding Society User Support - Support #723: Combining USOC/BHPS and zero weightshttps://iserredex.essex.ac.uk/support/issues/723?journal_id=30622017-10-19T10:33:35ZOlena Kaminskaolena@essex.ac.uk
<ul><li><strong>% Done</strong> changed from <i>80</i> to <i>100</i></li></ul> Understanding Society User Support - Support #723: Combining USOC/BHPS and zero weightshttps://iserredex.essex.ac.uk/support/issues/723?journal_id=33162018-02-12T12:29:25ZAlita Nandi
<ul><li><strong>Status</strong> changed from <i>In Progress</i> to <i>Resolved</i></li></ul>