2025
Analysis of Cohort Stepped Wedge Cluster‐Randomized Trials With Nonignorable Dropout via Joint Modeling
Gasparini A, Crowther M, Hoogendijk E, Li F, Harhay M. Analysis of Cohort Stepped Wedge Cluster‐Randomized Trials With Nonignorable Dropout via Joint Modeling. Statistics In Medicine 2025, 44: e10347. PMID: 39963907, PMCID: PMC11833761, DOI: 10.1002/sim.10347.Peer-Reviewed Original ResearchConceptsStepped wedge cluster randomized trialDropout processNonignorable missing outcomesParallel-arm cluster-randomized trialsCluster randomized trialNonignorable dropoutsJoint longitudinal-survival modelLongitudinal submodelData-generating scenariosMissingness patternsJoint modeling methodologyCorrelation structureMonte Carlo simulationsLongitudinal outcomesJoint modelEffective parametrizationPrimary care practicesGeriatric care modelsCarlo simulationsFrail older adultsAssociation structureSubmodelsCare modelUsual careCare practices
2018
Brief Report
Delaney JA, Nance RM, Whitney BM, Altice FL, Dong X, Trejo MEP, Matsuzaki M, Taxman FS, Chander G, Kuo I, Fredericksen R, Strand LN, Eron JJ, Geng E, Kitahata MM, Mathews WC, Mayer K, Moore RD, Saag MS, Springer S, Chandler R, Kahana S, Crane HM. Brief Report. JAIDS Journal Of Acquired Immune Deficiency Syndromes 2018, 79: 283-287. PMID: 30036277, PMCID: PMC6681811, DOI: 10.1097/qai.0000000000001803.Peer-Reviewed Original ResearchConceptsPHQ-9 scoresDepressive symptomsSubstance useATS useLower oddsMean decreaseAmphetamine-type substancesAIDS Research NetworkCocaine/crack useDepressive symptom scoresMental health disordersJoint longitudinal-survival modelCocaine/crackPoor outcomeSymptom scoresPHQ-9Health disordersIllicit opiatesSymptomsPLWHLongitudinal assessmentSite cohortSubstance use frequencyCrack useAbstinence
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