Personal Follow-Up in a Mail Survey: Its Contribution and Its Cost
This article addresses itself to the following questions: Who are the non-respondents to a mail survey, and what effect does their absence have on the achieved sample? What type...
This article addresses itself to the following questions: Who are the non-respondents to a mail survey, and what effect does their absence have on the achieved sample? What type...
h-index: Number of publications with at least h citations each.