Abstract 15: Patient-Reported versus Physician-Estimated Angina in Patients Undergoing Percutaneous Coronary Intervention
Bibliographic record
Abstract
Background: The primary indication for coronary revascularization in patients with stable ischemic heart disease (SIHD) is relief of angina and improvement in quality of life. In current clinical practice, the Canadian Cardiovascular Society Classification (CCSC) system is used to quantify angina. However, the CCSC is a subjective estimate of angina burden from the perspective of the physician, rather than the patient. Although previous studies have demonstrated discordance between physician-estimated and patient-reported assessment of angina, whether this discordance exists in patients undergoing percutaneous coronary intervention (PCI) is unknown. Methods: We prospectively collected the Seattle Angina Questionnaire Angina Frequency (SAQ AF) scores on 769 patients undergoing PCI for SIHD and 895 patients undergoing PCI for unstable angina (UA) between 2009-2011 across 10 U.S. hospitals, and compared the SAQ AF categories of daily (SAQ AF 0 - 30), weekly (SAQ AF 31 - 60), monthly (SAQ AF 61 - 99) and no angina (SAQ AF = 100) over the past 4 weeks with the CCSC as captured in the National Cardiovascular Data Registry (NCDR) for PCI (Table 1). Results: In patients with SIHD, 267 (35.2%) of 769 patients reported a SAQ AF score of 100 (no angina). Of those with no self-reported angina, 33 (12.4%) and 20 (7.5%) were assessed by physicians as having moderate (CCSC II) or severe (CCSC III or IV) angina, while 197 (73.8%) were reported to have no angina (CCSC 0). In patients with UA, 110 (12.3%) of 895 patients reported a SAQ AF of 100, despite being categorized as having unstable angina. Conclusions: These data suggest a discordance between patient-reported and physician-assessed angina burden among patients undergoing PCI and may impact ratings of procedural appropriateness in the NCDR. Collecting patient-reported outcome measures with the SAQ may be a useful clinical tool for selecting patients who are likely to experience quality of life benefit after coronary revascularization.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.003 | 0.013 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
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".