[Alarming tendency of increased number of dropouts in epidemiologic case-control studies].
Feychting
Maria
M
Institutet för miljömedicin, Karolinska institutet, Stockholm. Maria.Feychting@imm.ki.se
Ahlbom
Anders
A
Björk
Jonas
J
Strömberg
Ulf
U
D016022:Case-Control Studies; D006801:Humans; D016017:Odds Ratio; D010352:Patient Dropouts / Q000706:statistics & numerical data*; D010358:Patient Participation / Q000706:statistics & numerical data* / Q000639:trends