Recall Bias in a Case-Control Surveillance System on the Use of Medicine during Pregnancy

Abstract excerpt

It is important to study possible teratogenic effects of drugs used during pregnancy. Many studies of this type rely upon case-control designs in which drug intake is recalled by the mothers after having given birth. Recall bias in this situation may lead to spurious associations. We looked for indicators of recall bias by comparing self-reported drug intake with medically notified intake for specific diseases in...

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