Best time to call in an online survey
Paula Vicente
Instituto Universitário de Lisboa
Introduction
Minimising the effort taken to complete an interview in order to reduce costs and increase response rates without introducing bias is a key objective in any survey. This goal is entirely met when an interview is obtained from each sampled unit with a single call attempt. However, this is a utopian scenario for in reality interviewers may fail to get an interview from a sample unit either because they cannot establish contact with the unit, or because the unit refuses to cooperate or is incapable...