CausalityMendelian Randomization AnalysisBiostatisticsConfounding Factors (Epidemiology)Epidemiologic Research DesignModels, StatisticalData Interpretation, StatisticalSelection BiasBiometryPropensity ScoreLikelihood FunctionsBias (Epidemiology)Epidemiologic StudiesRandomized Controlled Trials as TopicResearch DesignBayes TheoremRegression AnalysisLongitudinal StudiesRandom AllocationMonte Carlo MethodEpidemiologic MethodsComputer SimulationTreatment OutcomePatient ComplianceRisk FactorsCohort StudiesPregnancyLogistic ModelsAlgorithmsGenotypeCase-Control StudiesFollow-Up StudiesTime FactorsProspective Studies