a) Selection Bias
b) Information Bias
c) Confounding
d) Generalizability
It has been suggested that physicians may examine women who use oral contraceptives more often or more thoroughly than women who do not. If so, and if an association is observed between phlebitis and oral contraceptive use, the association may be due to:
a) Selection Bias
b) Information Bias
c) Confounding
d) Generalizability