Assessment of Decline in Health-Related Quality of Life among Angina-Free Patients Undergoing Coronary Artery Bypass Graft Surgery
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Bibliographic record
Abstract
PURPOSE: Coronary artery bypass graft (CABG) surgery generally decreases symptoms and improves quality of life, but for those patients without angina, prolongation of life takes precedence. We used the SF-36 to assess changes in health-related quality of life (HRQOL) among patients who were angina free prior to CABG compared to those reporting angina. METHODS: We combined data from two randomized trials of hemodynamic management during surgery. Prior to CABG, demographic, clinical and SF-36 data were obtained. Patients were reevaluated at a 6-month follow-up. Patients with a decline of > or =15 points from baseline to follow-up for individual SF-36 domains and >5 points for summary components were classified as having a decline. We used logistic regression models that controlled for baseline SF-36 score and other baseline characteristics to assess HRQOL decline with respect to angina status. RESULTS: Of 590 patients, 28% were angina free at baseline. A third of the patients angina free at baseline had a postoperative decline in physical function. Patients who were angina free at baseline were three times more likely to suffer a decline in physical function than those with angina (odds ratio 3.29, 95% confidence interval 1.86-5.82). This finding remained after addition of adverse outcomes to the model. Baseline angina status was not related to any other SF-36 domain or to physical or mental summary component scores. Major adverse outcomes did not differ between angina-free patients and those with angina. CONCLUSIONS: The incidence of patients reporting a decline in physical function after CABG was greater in patients without angina preoperatively, even when adjusting for baseline score. Given the substantial risk of decreased physical functioning, employing interventions to maintain HRQOL in this population should be considered.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it