https://iserredex.essex.ac.uk/support/https://iserredex.essex.ac.uk/support/support/favicon.ico?15995719382014-10-30T13:04:53ZUnderstanding Society User SupportUnderstanding Society User Support - Support #318: missing standard erroros Wave 3https://iserredex.essex.ac.uk/support/issues/318?journal_id=8912014-10-30T13:04:53ZAlita Nandi
<ul></ul><p>One of the reasons Stata does not produce standard errors when using svyset is that there are strata with only one PSU. I am not sure if this is the case, but if it is here are a couple of solutions.</p>
<p>One solution suggested by Stata is to use the option singleunit(). What this does is implement different methods of estimating standard error when this happens - you will need to decide which of these methods to use - certainty, scaled or centered. See Stata Help.</p>
<p>Another solution is to merge adjacent strata and continuing doing so until there are no single PSU strata.</p> Understanding Society User Support - Support #318: missing standard erroros Wave 3https://iserredex.essex.ac.uk/support/issues/318?journal_id=8922014-10-30T13:05:12ZAlita Nandi
<ul><li><strong>Status</strong> changed from <i>New</i> to <i>In Progress</i></li><li><strong>% Done</strong> changed from <i>0</i> to <i>90</i></li></ul> Understanding Society User Support - Support #318: missing standard erroros Wave 3https://iserredex.essex.ac.uk/support/issues/318?journal_id=9022014-10-31T13:46:20ZCarolina Zuccotticarolina.zuccotti@eui.eu
<ul></ul><p>Dear Alita,<br />Thank you for your response!<br />Indeed, that is the problem: strata with single PSU.<br />Before (i.e. in wave 1) I used to solve it with the subpop specification only (added before the regression), so not sure why that does not work now.<br />In any case, the singleunit specification solves it.<br />Do you have any suggestions on which one to use? (or which one has been commonly used by researchers using UKHLS?). <br />Or any documentation that I could look at for this matter?<br />Many thanks in advance,<br />Carolina</p> Understanding Society User Support - Support #318: missing standard erroros Wave 3https://iserredex.essex.ac.uk/support/issues/318?journal_id=9362014-11-28T12:34:06ZAlita Nandi
<ul></ul><p>At this point there is no guidance available as to which of the three options (certainty, scaled, centered) produce better estimates of the standard errors.<br />Alita</p> Understanding Society User Support - Support #318: missing standard erroros Wave 3https://iserredex.essex.ac.uk/support/issues/318?journal_id=9512014-12-12T12:19:21ZRedmine Adminjpeterb@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>90</i> to <i>100</i></li></ul>