Do the effects of interviewer administered follow-ups of web non-respondents on dataset quality differ between overall datasets and population subgroup datasets?
When, and how much, might effect estimates be biased when analysing mixed mode survey data? The roles of mode effects, mode selection, and mode split
Assessment of a knock-to-nudge recruitment strategy to improve participation in a telephone survey: evidence from the National Survey for Wales
Web-first or CAPI-first? How best to combine modes to recruit a probability-based general population survey sample in the UK