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
Quality in unimode and mixed-mode designs: a multitrait-multimethod approach [journal article]
Source: Survey Research Methods, 4 (2010) 3. p.151-164