Schräpler, Jörg-Peter; Schupp, Jürgen; Wagner, Gert G. - In: Journal of Official Statistics 26 (2010) 2, pp. 239-269
sample points contained 16 addresses (8 for E1 and 8 for E2) and with each interviewer alternating in the first wave between … control for possible interviewer effects in the analysis of mode effects in Wave 1. The article assesses whether any mode …