Within-household clustering of attitudes and implications for survey sample design when only address-based frames are available
Methods for within-household selection in self-administered push-to-web surveys: an experimental comparison
Assessment of a knock-to-nudge recruitment strategy to improve participation in a telephone survey: evidence from the National Survey for Wales
Effectiveness of the knock-to-nudge approach for establishing contact with the respondents: evidence from the National Readership Survey in the UK