ComorbidityMental DisordersDiagnostic and Statistical Manual of Mental DisordersAnxiety DisordersUnited StatesMood DisordersRetrospective StudiesRisk FactorsPrevalenceAge FactorsCohort StudiesSeverity of Illness IndexTreatment OutcomeDiagnosis, Dual (Psychiatry)Substance-Related DisordersRisk AdjustmentPsychiatric Status Rating ScalesProspective StudiesDepressive DisorderChronic DiseaseTime FactorsLogistic ModelsCross-Sectional StudiesFollow-Up StudiesQuestionnairesHealth SurveysPhobic DisordersQuality of LifePrognosisDepressionDepressive Disorder, MajorHospitalizationSurvival RateMultivariate AnalysisRisk AssessmentProportional Hazards ModelsAlcoholismPersonality DisordersInterview, PsychologicalImpulse Control DisordersStress Disorders, Post-TraumaticSex FactorsSurvival AnalysisVeteransMedicareRegistriesBipolar DisorderConduct DisorderPanic DisorderObsessive-Compulsive DisorderLongitudinal StudiesAttention Deficit Disorder with HyperactivitySocioeconomic FactorsRegression AnalysisHealth StatusOutcome Assessment (Health Care)Predictive Value of TestsKidney Failure, ChronicHospital MortalityOdds RatioAge of OnsetDiabetes MellitusRenal DialysisDenmarkIncidenceAnxietyActivities of Daily LivingHealth Status IndicatorsChi-Square DistributionSickness Impact ProfileInternational Classification of DiseasesNetherlandsDisability EvaluationDiseases in TwinsCause of DeathKaplan-Meier EstimateLength of StayHealth Care CostsPatient SelectionDemographyGeriatric AssessmentDatabases, FactualEating DisordersHealth ServicesCase-Control StudiesPeritoneal DialysisSpainAttention Deficit and Disruptive Behavior DisordersObsessive HoardingAgoraphobiaMigraine DisordersCardiovascular DiseasesAntisocial Personality DisorderSEER ProgramPrimary Health CareSomatoform DisordersUnited States Department of Veterans AffairsAge DistributionReproducibility of ResultsHypochondriasis