Brakel, Jan A. van den; Roels, Joeri - 2009
transition the data collection mode, the questionnaire, the context of
the survey and the fieldwork period changed, which … and Compton (2008) for an overview. In this application the
redesign mainly affects the data collection process. In such … older with a non-
secret landline telephone connection or cell-phone number. The data collection of
the SSPEC is conducted …