Understanding Society: Calendar Year Dataset, 2021 USER GUIDE Version 1, December 2023

The only exceptions to this rule are the wave specific household identifiers, the politics and election variables and the employment variables which are now collected differently in the Current employment module from Wave 13. [...] For further information on ‘New’ variables and Changes to the employment questions from Wave 13 please refer to the main user guide which includes tables that document the changes made to the variables in Wave 13. [...] The weights for this release are calculated using the same methods as those used in the main data release with the exception that the nonresponse model is run separately for each of the earlier waves (w and x) and is run only for the sample issue months 1-12 for the most recent wave (y). [...] In the calendar year data file, late respondents of the most recent wave (y), that fall outside of the calendar year, are compensated by late respondents of the earliest wave (w), where only these are included in the dataset. [...] Data access and citation 4.1 Citing this data The citation changes at each release to reflect the addition of the data from the new wave.