The best times to call in a mobile phone survey
Paula Vicente
Instituto Universitario de Lisboa (ISCTE-IUL)
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...