Maximum Allowable ConcentrationRisk AssessmentOutcome Assessment (Health Care)Treatment OutcomeInjections, EpiduralResearch DesignSports MedicineQuality of LifeDisability EvaluationReproducibility of ResultsEmpirical ResearchFollow-Up StudiesProspective StudiesOutcome and Process Assessment (Health Care)FluoroscopyTime FactorsRandomized Controlled Trials as TopicSeverity of Illness IndexRetrospective StudiesActivities of Daily LivingPatient Outcome AssessmentRecovery of FunctionPatient SatisfactionSingle-Blind MethodSpinal StenosisQuestionnairesPain MeasurementUnited StatesEducational MeasurementClinical Trials as TopicHealth Status IndicatorsLumbosacral RegionPregnancy OutcomePhysical Therapy ModalitiesRange of Motion, ArticularLow Back PainStrokePredictive Value of TestsAnesthetics, LocalChronic DiseaseRisk FactorsEducation, DentalCohort StudiesDouble-Blind MethodProgram EvaluationIntervertebral Disc DisplacementPilot ProjectsCurriculumRadiculopathyObserver VariationPatient SelectionEvidence-Based MedicineBack PainClinical ProtocolsCost-Benefit AnalysisNerve BlockData CollectionPsychometricsLongitudinal StudiesSteroidsLumbar VertebraePractice Guidelines as TopicPainPrognosisExercise TherapyPregnancySensitivity and SpecificityInfant, Newborn