Are Non-Respondents Similar to Respondents? Findings from the ESS-2004 in Poland
Sztabiński, Franciszek; Sztabiński, Paweł B.; Przybysz, Dariusz (2007)
In Poland, like in other countries, participation in surveys is declining over time. The growing non-response rates increase a risk of systematic bias of the results depending on the differences between non-respondents and ...