Playing hard to get: field substitutions in health surveys.
Demarest
Stefaan
S
Epidemiology Unit, Scientific Institute of Public Health, Brussels, Belgium. stefaan.demarest@iph.fgov.be
Gisle
Lydia
L
Van der Heyden
Johan
J
D001530:Belgium; D006306:Health Surveys; D006801:Humans; D007407:Interviews as Topic; D016015:Logistic Models