Self-Evaluation ProgramsSelf-AssessmentVisual Analog ScaleQuestionnairesProportional Hazards ModelsRisk AssessmentSelf CareSelf ConceptRisk FactorsProspective StudiesFollow-Up StudiesReproducibility of ResultsTreatment OutcomeCohort StudiesTime FactorsSelf TolerancePrognosisOutcome Assessment (Health Care)Predictive Value of TestsNursing AssessmentRetrospective StudiesKaplan-Meier EstimateSurvival AnalysisHazardous SubstancesSeverity of Illness IndexUnited StatesIncidence