2013
Impact of Definitions of Loss to Follow-up on Estimates of Retention, Disease Progression, and Mortality: Application to an HIV Program in Mozambique
Shepherd BE, Blevins M, Vaz LM, Moon TD, Kipp AM, José E, Ferreira FG, Vermund SH. Impact of Definitions of Loss to Follow-up on Estimates of Retention, Disease Progression, and Mortality: Application to an HIV Program in Mozambique. American Journal Of Epidemiology 2013, 178: 819-828. PMID: 23785113, PMCID: PMC3755641, DOI: 10.1093/aje/kwt030.Peer-Reviewed Original ResearchConceptsHuman immunodeficiency virusVisit scheduleKaplan-Meier techniqueRate of mortalityAntiretroviral therapyCumulative incidenceTreatment initiationEstimates of retentionImmunodeficiency syndromeImmunodeficiency virusHIV programsChronic diseasesDisease progressionPatient retentionImpact of definitionsHIV literatureClinical encountersStudy outcomesMortalityAIDSLTFDeathInformative censoringProgram evaluationStudy conclusions
2010
An Empirical Approach to Defining Loss to Follow-up Among Patients Enrolled in Antiretroviral Treatment Programs
Chi BH, Cantrell RA, Mwango A, Westfall AO, Mutale W, Limbada M, Mulenga LB, Vermund SH, Stringer JS. An Empirical Approach to Defining Loss to Follow-up Among Patients Enrolled in Antiretroviral Treatment Programs. American Journal Of Epidemiology 2010, 171: 924-931. PMID: 20219765, PMCID: PMC2850972, DOI: 10.1093/aje/kwq008.Peer-Reviewed Original ResearchConceptsAntiretroviral therapyHIV-infected adultsAntiretroviral treatment programLTFU definitionTreatment cohortsPatient attritionLast appointmentPatient lossCohort membersLTFUConsensus criteriaTreatment programPatientsOne-thirdMore reliable comparisonsDaysAppointmentsTherapyCohortCliniciansMisclassificationMarginal differencesVisitsCare
2005
Parents’/guardians’ willingness to vaccinate their children against genital herpes
Liddon N, Pulley L, Cockerham WC, Lueschen G, Vermund SH, Hook EW. Parents’/guardians’ willingness to vaccinate their children against genital herpes. Journal Of Adolescent Health 2005, 37: 187-193. PMID: 16109337, DOI: 10.1016/j.jadohealth.2005.05.030.Peer-Reviewed Original ResearchConceptsHSV-2Type 2 vaccineLogistic regression modelsParents/guardiansInfluenza shotSTD vaccinesCorrelates of intentionGenital herpesMajority of parentsVaccine acceptanceDisease vaccineVaccinationLogistic regressionOptimal timingFuture interventionsVaccineAppropriate timingSexual activityTelephone surveyChildrenParents' acceptanceInterventionOne-thirdDescriptive statisticsOverall attitude
1991
The unseen sample in cohort studies: Estimation of its size and effect
Hoover DR, Muñoz A, Carey V, Odaka N, Taylor J, Chmiel JS, Armstrong J, Vermund SH. The unseen sample in cohort studies: Estimation of its size and effect. Statistics In Medicine 1991, 10: 1993-2003. PMID: 1805323, DOI: 10.1002/sim.4780101212.Peer-Reviewed Original ResearchMeSH KeywordsAcquired Immunodeficiency SyndromeBiasCohort StudiesData Interpretation, StatisticalHIV SeropositivityHIV-1HomosexualityHumansMaleMulticenter Studies as TopicUnited States