HematomaHematoma, Epidural, CranialHematoma, SubduralHematoma, Subdural, ChronicHematoma, Subdural, AcuteHematoma, Epidural, SpinalHematoma, Subdural, IntracranialHematoma, Subdural, SpinalCerebral HemorrhageTrephiningTomography, X-Ray ComputedCraniotomyFrail ElderlySubdural SpaceSkull FracturesTreatment OutcomeData CollectionCerebral Hemorrhage, TraumaticAge FactorsAgingCraniocerebral TraumaDura MaterBasal Ganglia HemorrhageRetrospective StudiesBlood Specimen CollectionMagnetic Resonance ImagingGlasgow Coma ScaleHousing for the ElderlyNeurosurgical ProceduresSubdural EffusionRectus AbdominisGeriatric AssessmentHealth Services for the AgedIntracranial HemorrhagesHead Injuries, ClosedTime FactorsProspective StudiesDrainageRisk FactorsPostoperative ComplicationsCranial Fossa, PosteriorLaminectomySpecimen HandlingRemission, SpontaneousSuctionAccidental FallsAnticoagulantsRetroperitoneal SpaceLigamentum FlavumIntracranial Hemorrhage, HypertensiveFollow-Up StudiesEsophageal DiseasesAcute DiseaseArachnoid CystsCerebral AngiographyDecompression, SurgicalBrain Hemorrhage, TraumaticWounds, NonpenetratingFatal OutcomeLibrary Collection DevelopmentGlasgow Outcome ScaleGeriatricsRupture, SpontaneousOrbital DiseasesSpinal Cord CompressionBrain EdemaSubarachnoid HemorrhageHomes for the AgedTomography Scanners, X-Ray ComputedExtravasation of Diagnostic and Therapeutic MaterialsAortic DiseasesChronic DiseaseWarfarinAneurysm, RupturedCohort StudiesUrine Specimen CollectionArachnoidActivities of Daily LivingCerebellar DiseasesUnited StatesCross-Sectional StudiesNursing HomesPrognosisIncidenceNeuroendoscopyReproducibility of ResultsParaparesisBrainBrain InjuriesSex FactorsThalamic DiseasesStereotaxic TechniquesHeadacheQuestionnairesHemorrhageIntracranial AneurysmExophthalmosInstitutionalizationAneurysm, DissectingNeurosurgery