2004
Effectiveness Over Time of Varicella Vaccine
Vázquez M, LaRussa PS, Gershon AA, Niccolai LM, Muehlenbein CE, Steinberg SP, Shapiro ED. Effectiveness Over Time of Varicella Vaccine. JAMA 2004, 291: 851-855. PMID: 14970064, DOI: 10.1001/jama.291.7.851.Peer-Reviewed Original ResearchConceptsTime of vaccinationVaricella vaccineVaccine effectivenessCase subjectsPolymerase chain reaction test resultsVaricella-zoster virus DNACase-control studyReaction test resultsReports of outbreaksFirst yearBreakthrough diseaseImmunized groupsActive surveillancePossible confoundersPediatric practiceVaccinationVaccineVirus DNAMonthsMost casesGroup practiceChickenpoxAgeYear 2Year 1
1989
New Epidemiologic Evidence Confirming That Bias Does Not Explain the Aspirin/Reye's Syndrome Association
Forsyth B, Horwitz R, Acampora D, Shapiro E, Viscoli C, Feinstein A, Henner R, Holabird N, Jones B, Karabelas A, Kramer M, Miclette M, Wells J. New Epidemiologic Evidence Confirming That Bias Does Not Explain the Aspirin/Reye's Syndrome Association. JAMA 1989, 261: 2517-2524. PMID: 2704111, DOI: 10.1001/jama.1989.03420170061031.Peer-Reviewed Original ResearchConceptsSyndrome AssociationCase subjectsMedical record review studyRecord review studyCase-control studyNew epidemiologic evidencePotential recall biasSeverity of symptomsEpidemiologic evidenceReye's syndromeEpidemiologic investigationsControl groupDiagnostic biasSusceptibility biasRecall biasBiphasic patternSyndromeAssociationReview studyPotential sourceSubjectsAspirinHospitalIllnessSymptoms