The National Survey for Wales is a study of adults across the whole of Wales.
The results reported here are based on the sample of addresses issued to interviewers between April 2013 and March 2014. Addresses were chosen randomly from the Royal Mail’s Small User Postcode Address File. Interviewers visited each address, randomly selected one adult (aged 16+) and carried out a 25-minute face-to-face interview with them. A total of over 14,500 interviews were completed, with a response rate of 71%.