biostudies-literatureUnknown69(4)Grußer LThe main study was supported by the European Society of Anaesthesiology and Intensive Care (ESAIC) as an ESAIC Research Group. MS received funding from the ESAIC POSE Research Group for this secondary analysis. The remaining authors report no funding for this secondary analysis.<h4>Background</h4>The number of older patients undergoing surgical procedures with anaesthesia care is projected to rise. In order to cope with the increased demand, the expansion of outpatient surgery may play a decisive role. We aim to investigate the characteristics and outcomes of the older outpatient population.<h4>Patients and methods</h4>The Peri-interventional Outcome Study in the Elderly in Europe (POSE) was a prospective multicenter study investigating characteristics and outcomes in 9497 patients aged 80 years and older undergoing a procedure with anaesthesia care. This secondary analysis of the POSE data investigated characteristics, functional and cognitive outcomes, and mortality in the outpatient in comparison to the inpatient population. Functional status was assessed as iActa anaesthesiologica Scandinavicae70021https://www.ebi.ac.uk/biostudies/studies/S-EPMC11932067biostudies-literatureCharacteristics and outcomes of older patients undergoing out- versus inpatient surgery in Europe. A secondary analysis of the Peri-interventional Outcome Study in the Elderly (POSE).PMC11932067Srairi MMeybohm PGeorgopoulou EHoogma DKoopman SWillner DKozlova KSaumier NDemeyer CStaikowsky FMolliex SDelannoy BLeone MSchulz RMavrommati ESoehle MBeran MMeresse ZPerez-Palao SYfantidis FLe Moal CMerissat ABonnal AImzi NPrunier-Bossion FDebaene BHiguero FBoisson MBerger MGilmartin Mde Noronha DRefaeli-Awin EWulf HTowa LDroger MOpperer MTorres-Machi MLChrist DPoels SDecker SAbad-Motos Avon Dossow VSancho-Inigo LVan Belleghem VGroßmann PRudolph DJosserand JGarot MCapaldo GSoro MKiamiloglou BLogotheti EEspinosa-Moreno AMVazenin ARempf CLaires MYilmaz HFenger-Eriksen CBrunetto ECoburn MVallier SKozanhan BRanft ABengisun ZKSantos SGle Guen MBraune SMiketta DKolonia KYildiz MKruger UMuller MReiffen HPIoannidis OMuller VAdam CAlkis NFeddersen PDrexler BJovicic JKiskira OChloropoulou PInal DGLaou EDupont SKazdal HBidon CSaller TUtrera EHızal ADupont HWeiss AKucukguclu SGarcia MVan de Velde MRoquilly ALeibeling AAndersen GButtner Cvan Schaik EMartinez DBandschapp OKorte-de Boer DVerdonk FTipisev DMaupain OSpyraki MLebrun CMa SSponholz CPopovska IBrenes AGoettel NSoelling CBulent ALukaszewicz ACMartinez SMillet SCouturier CMinville VLanzaro CHernandez RMVandenbossche CKluth MWiedemann TDumans VAzenha MDelvaux BBaute JSivrikoz NWasilewski MThomann AEPeled RNloga JPassot SMarsman MKalopita KMartin CFilipescu DSwitzer TMercadal LPuybasset LTomescu DRSantamaria MSungur ZNeumann CLivne MYPlehn HTurhan SCPinar HUPerez AAHuynh DDimakopoulou AMorandeira-Rivas CBauer MBaenziger BDolzenko EAkbuz SOPillant TCastanera JKatsanoulas KVlachakis EJose IGNickel FDelgado ASreckovic SCarazo SEZarzava EGarutti IMontelescaut EMerten ALaso LFGillmann HJBergmann LGokhan KDraegert CGozal YVachlioti ARipolles-Melchor JVan Waesberghe JMarcos-Vidal JMGuenther UTarasi MBruge-Ansel MHBeuvelot JHochter DMeersch MTorradeflot LGMangoubi EDalso SMSchneider GZabeeda WFarcher HRajamanickam SHofmann-Kiefer KParamanathan SKoutsouli EDe Ruyter HKarpetas GHoeft AFerraz IBoulay-Maninovsky CDegoul SKortgen AAlvira Uribe MJSchwartges IMartin-Vaquerizo BUnterberg MAguirre JGSanabra MHerranz GAlbinarrate AOrfao RHerbinet CChariski HAAdriaensens ISchmidt CPineiro PKir BCeran EUVester-Andersen MStefanescu EStathopoulos ASchumacher PRomain FXZeuzem-Lampert CSiebing DAMissant CMoral VStueber TSimonneau FBuhre WMiralles JLadjevic NGallego-Ligorit LSchumacher DGregoriadou IZanoun NTimmers MKoltka KZwissler BPujol PSMichel DDewinter GMollmann MKolesnikova ADuc PTClermond ECastelli FSommer TGMadrona VKranke PGuclu CYLe Guen MTerzi EZSchmid MSchenk ACalmelet ADiaz CRGulgun GKnudsen HHDeligne EBuchman IStamoulis KTzimas PPastene BAndriessen ASaldien VMahjoub Yde Paz JFLabaste FScharffenberg MFondarella AMKirkegaard JDouma ALagrange CHuygens CPhan JPSeeberger EGarnier FRajkovic MBilotta FFrasca DEspejo SRasmussen VMPiekarski FUnic-Stojanovic DOtto MHipp SAbraham PFriggeri AGonzalez VBSoetens FMilati RMenut RRossaint RNtouba ADoerig RGuillaud OWittmann MErdivanlı BCattan AGaillet MStosic Bde Baene AStarke HSchafer MVan Gorp RGignoux BSilva JDjukanovic MSantiago ACZiemann SBlum AALewandowski MNaumovski FSegura NBoscart ISivevski ARodriguez MOFerre FDincer PCOlesen CMGrintescu IMHemping-Bovenkerk ASteinmetz JZarbock AOzdemir ARusch DSmit-Fun VFritsch MLanoiselee JLieutaud TCarlier SHizal AArnaoutoglou EOzcelik MAsehnoune KRojas GMBollheimer LCBecerra-Bolanos ABlazek JRimmele TKudsioglu TStehen NPLurati-Buse GMalinovsky JMCruz PStojanovic MGrußer LSchafer STSchaefer STMucuoglu CACastelain CBadoux QDe Corte WBarrau SMeco BCBatistaki CEidelman LAStefan MSibellas FPOSE Study groupTournoy JBerger MMGreke CWittenstein JDe Bruyne ABosc Gde Jose RHaberecht HKartalov ABoselli ESolores FLFernandes SGouraud DCorneci DFernandes OBanos VNastou MAndreeva ABorrego AErgil Jvan den Enden TKazbek BKCalvo ABlet AKamrath MBosch LLamblin ABerghmans JVarin FBampzelis ABlesa ACSeiß MGlasman PTuna ATMontero NDridi SMorris OGeleve GBulasevic AFthenakis PSamara EGarcia AMSrinivasan KTorredeflot LGBounes-Vardon FYahav-Shafir DWitt LMuller-Esch SGroene PSteinberg YFernandez ARSantana-Ortega LKowark AGiltaire AOdin ITorrijos LLDetienne HSamama CMLornage EFalieres XLianou IBouic NDesebbe OSchmidt JCPapathanakos GKortekaas MAlanoglu ZAyse IEMunoz RFrei SBrune MMatsota POrlcin DSifaki FOleg DBranquinho PToleska MLopez CPBonneric LHoehn SGurlit SSekulic ALee PBurgos ARoth JSkandalou VDesmet MNikouli ETatani IMeeusen RHofmann PRodriguez-Perez AMassiera BRueda FRHaderslev PCharret FAgavriloaia MLLundstrom LHLindau SSuarez-Romero VMatot ISaracoglu KTFelman LDevroe SCharco PRump KKoksoy UCFernandez IPanagiotou EGarcia MMFernandez CHodel DJensen LTOprea GKetikidou ERiboulet FLebas BKaragoz EOprea OSzakmany TAharonov RSchirwitz LMBurow KGerstmeyer DLeffler APunshi GDVillar AHBalanika MKoppert WDe Hert SZamudio DCanbolat NHilgers RDVandermeulen EEl-Hilali EAAdjavon SZahiu SVMacharadze TSteiner LARobert ADziadzko MGuadalupe NTomasi RDanguy des Deserts MMesotten DAydin GHajiyeva KBerkenstadt HKuzmanovska BRodriguez MNowak HHinterberg JEerdekens GJRamaswamy SGomis PChristidou ERex SKienbaum PKammerer TTheunissen MVan Hove SMallard JBischoff PMermet YPires ALebuffe GPetua PMilenovic MKaufhold TAMarinkovic OMendrinou KNikolic JKhoronenko VTsaousi GKenig JVogelsang HBaskakov DKlutzny MLorne ESociete Francaise d'Anaesthesie Et de Reanimation Sfar Research Network ParisLasocki SDejour DfalseCharacteristics and outcomes of older patients undergoing out- versus inpatient surgery in Europe. A secondary analysis of the Peri-interventional Outcome Study in the Elderly (POSE).<h4>Background</h4>The number of older patients undergoing surgical procedures with anaesthesia care is projected to rise. In order to cope with the increased demand, the expansion of outpatient surgery may play a decisive role. We aim to investigate the characteristics and outcomes of the older outpatient population.<h4>Patients and methods</h4>The Peri-interventional Outcome Study in the Elderly in Europe (POSE) was a prospective multicenter study investigating characteristics and outcomes in 9497 patients aged 80 years and older undergoing a procedure with anaesthesia care. This secondary analysis of the POSE data investigated characteristics, functional and cognitive outcomes, and mortality in the outpatient in comparison to the inpatient population. Functional status was assessed as i2025-01-01T00:00:00Z2025 Apr2026-06-01T19:06:38.64Z2025-07-02T03:04:14.324ZS-EPMC119320674012614210.1111/aas.70021