Hits 1-2 within 2 documents
Relative mode effects on data quality in mixed-mode surveys by an instrumental variable [journal article]
Source: Survey Research Methods, 7 (2013) 3. p.157-168
Measurement invariance and quality of composite scores in a face-to-face and a web survey [journal article]
Source: Survey Research Methods, 7 (2013) 1. p.17-28