Using mobile phones for survey research: a comparison with fixed phones
Paula Vicente, Elizabeth Reis and Maria Santos ISCTE-Lisbon University Institute
INTRODUCTION
In the 1990s, telephone surveys became the dominant mode of data collection in countries with extensive telephone coverage. Phone surveys are based on the assumption that their sampling frame can provide good coverage of the target population. On the one hand, this condition requires that the percentage of target population missing from the sampling frame is small and, on the other, the units excluded from the frame are not very different from those...