Lessons Learned From a Clinical Trial
Bibliographic record
Abstract
R emarkable advances in cardiovascular care have been substantially mediated by large-scale, randomized clinical trials.These trials not only have identified treatments resulting in major improvements in patient outcomes but also have enhanced our understanding of the natural history of contemporary disease and the impact of risk factors and complications.The process by which phase III clinical trials in cardiovascular medicine are created, implemented, completed, analyzed, presented, and published has evolved dramatically over the past decade.Historically, government and academic alliances took center stage in this process because of their intellectual equity, opinion leadership, access to patients, and allocation of public interest-related research tax dollars.This axis has now shifted.Community practitioners and groups of physicians, often organized regionally, now provide the majority of subjects for clinical trials.Furthermore, substantial scientific expertise, at both the basic and clinical levels, resides within multinational pharmaceutical firms.Additionally, contract research organizations have seized the business opportunity afforded by the need for timely and efficient operational aspects of clinical trials.Although communitybased trials, efficiency, and expertise are prerequisites for a major clinical trial, the extraordinary costs of completing them squarely places the sponsor in a dominant position. 1ur participation in the failed large-scale attempt to develop a novel oral glycoprotein IIb/IIIa inhibitor, sibrafiban, for secondary prevention of coronary heart disease has stimulated us to reflect on issues that arose in the design and conduct of this trial. 2,3Using the Sibrafiban Versus Aspirin to Yield Maximum Protection From ischemic Heart Events Post-Acute Coronary Syndromes (SYMPHONY) and 2nd SYMPHONY trials as examples, we review issues here that should be of interest to investigators, clinical practitioners, participating institutions, sponsors, data and safety monitoring boards (DSMBs), and the patients whom we serve. 4Our purpose is to encourage discussion so that standards can be enhanced for this form of collaborative science.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.082 | 0.145 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.008 | 0.005 |
| Bibliometrics | 0.003 | 0.003 |
| Science and technology studies | 0.001 | 0.003 |
| Scholarly communication | 0.008 | 0.012 |
| Open science | 0.005 | 0.003 |
| Research integrity | 0.009 | 0.017 |
| Insufficient payload (model declined to judge) | 0.010 | 0.003 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".