Collection National Survey for Wales: background information Details about how the survey is developed and carried out. First published: 4 February 2019 Last updated: 4 February 2019 Background Questionnaires 13 April 2022 Background Technical information 8 October 2021 Background Development work 7 April 2022 Background Cognitive testing 17 February 2022 Background User feedback 17 July 2017 Background Datasets 17 May 2022 Background Related National Survey for Wales
