Blood SedimentationErythrocytesArthritis, RheumatoidPolymyalgia RheumaticaC-Reactive ProteinGiant Cell ArteritisAntirheumatic AgentsErythrocyte MembraneSpondylitis, AnkylosingGold Sodium ThiomalateSulfasalazineHematologic TestsSeverity of Illness IndexBiological MarkersThyroiditis, SubacuteBlood ViscosityArthritis, JuvenileRheumatoid FactorAcute-Phase ReactionJointsLeukocyte CountErythrocyte AggregationOsteomyelitisSpondylitisProspective StudiesTreatment OutcomeSynovial FluidWrist JointAuranofinPrednisoloneTakayasu ArteritisArthritis, PsoriaticPredictive Value of TestsCrohn DiseaseTuberculosis, SpinalErythrocyte AgingArthrographyBlood Protein DisordersErysipelothrix InfectionsArthritis, InfectiousColitis, IschemicMethotrexateRheumatoid NoduleTemporal ArteriesHydroxychloroquineAlpha-GlobulinsRetrospective StudiesFollistatin-Related ProteinsAnti-Inflammatory AgentsCentrifugation, Density GradientFollow-Up StudiesPenicillamineSpondylarthropathiesProsthesis-Related InfectionsRetroperitoneal FibrosisSensitivity and SpecificityInflammationArthritisEpidural AbscessHemoglobinsLupus Erythematosus, SystemicTuberculosis, OsteoarticularUltracentrifugationPrognosisFibrinogenDebridementArteritisArthritis, ReactiveRheumatic DiseasesPlatelet CountAortitisImmunoglobulin GAnti-Inflammatory Agents, Non-SteroidalSynovitisDrug Therapy, CombinationDouble-Blind MethodBlood Specimen CollectionColitis, UlcerativeTime FactorsBlood ProteinsBehcet SyndromeReference ValuesAnemiaAntibodies, AntinuclearGlucocorticoidsHaptoglobinsPrednisoneDisease ProgressionSpinal DiseasesHematocritErythrocyte DeformabilityCase-Control StudiesInterleukin-6Molecular WeightAnion Exchange Protein 1, ErythrocyteStatistics, NonparametricRisk FactorsSjogren's SyndromeMucocutaneous Lymph Node SyndromeCross-Sectional Studies