Franzone, AnnaAnnaFranzoneHeg, Dierik HansDierik HansHeg0000-0002-8766-7945Räber, LorenzLorenzRäberValgimigli, MarcoMarcoValgimigliPiccolo, RaffaeleRaffaelePiccoloZanchin, ThomasThomasZanchinYamaji, KyoheiKyoheiYamajiStortecky, StefanStefanStorteckyBlöchlinger, StefanStefanBlöchlingerHunziker Munsch, Lukas ChristophLukas ChristophHunziker MunschPraz, Fabien DanielFabien DanielPrazJüni, PeterPeterJüniWindecker, StephanStephanWindeckerPilgrim, ThomasThomasPilgrim2024-10-242024-10-242016-09https://boris-portal.unibe.ch/handle/20.500.12422/146078OBJECTIVES We sought to systematically evaluate the external validity of a contemporary randomized controlled stent trial (BIOSCIENCE). METHODS Baseline characteristics and clinical outcomes of patients enrolled into the BIOSCIENCE trial at Bern University Hospital (n = 1216) were compared to those of patients included in the CARDIOBASE Bern PCI Registry at the same institution (n = 1045). The primary study endpoint was the rate of target lesion failure (TLF), defined as a composite of cardiac death, target vessel-myocardial infarction (MI) or target lesion revascularization (TLR), at 1 year. RESULTS Women were underrepresented in the RCT compared to the registry (25 vs. 29.4 %, p = 0.020). Non-participants were older compared to study participants (69.2 ± 12.4 vs. 67.0 ± 11.6, p < 0.001), and had a higher prevalence of previous cerebrovascular events (10.8 vs. 5.2 %, p < 0.001), and chronic renal failure (35.5 vs. 15.6 %, p < 0.001). ST-segment elevation myocardial infarction (STEMI) and Killip class IV at presentation were more common among non-participants than participants (30.7 vs. 21.1 %, p < 0.001 and 7.8 vs. 0.4 %, p < 0.001, respectively). At 1 year, non-participants experienced a significantly higher rate of TLF, (15.0 vs. 6.5 %, p < 0.001), and patient-oriented composite endpoint (POCE), including death, MI or any repeat revascularization (21.6 vs. 11.2 %, p < 0.001). There was a significant interaction between POCE and presence or absence of an acute coronary syndrome in participants versus non-participants, respectively (p = 0.009). CONCLUSIONS Non-participants of this all-comers trial had a higher risk profile and adverse prognosis compared to study participants. Further efforts are needed to improve the external validity of contemporary RCTs.enDrug-eluting stentsGeneralizabilityInterventional trial600 - Technology::610 - Medicine & health300 - Social sciences, sociology & anthropology::360 - Social problems & social servicesarticle10.7892/boris.898342703385910.1007/s00392-016-0983-z