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External validity of the 'all-comers' design: insights from the BIOSCIENCE trial.
- Source :
- Clinical Research in Cardiology; Sep2016, Vol. 105 Issue 9, p744-754, 11p
- Publication Year :
- 2016
-
Abstract
- Objectives: 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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 18610684
- Volume :
- 105
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Clinical Research in Cardiology
- Publication Type :
- Academic Journal
- Accession number :
- 117510391
- Full Text :
- https://doi.org/10.1007/s00392-016-0983-z