Ruptured Abdominal Aortic Aneurysms in Southern Saskatchewan: A 10-Year Mortality Review
Bibliographic record
Abstract
The Regina Qu'Appelle Health Region (RQHR) provides all tertiary vascular care for southern Saskatchewan and portions of southwestern Manitoba. The present study was undertaken to determine the regional mortality rates following rupture of an abdominal aortic aneurysm and to compare these rates with the published literature. A retrospective chart review was undertaken on all cases of ruptured abdominal aortic aneurysms (rAAA) presenting to the RQHR between March 1, 1996, and February 28, 2006. The demographic data and clinical outcomes were collected from hospital charts by a single reviewer. Over the 10-year study period, 101 cases of rAAA were presented to the RQHR. Patient demographics and comorbidities were comparable to other studies in the published literature. Thirty-seven percent of patients presented with systolic blood pressure below 90 mm Hg, and 7% had no recordable blood pressure. The overall mortality was 25%. Mortality risk was not statistically different between patients presenting within Regina (30%) and those referred from a distance of more than 35 km (21%, P = .353). Seven patients were treated palliatively, and 94 proceeded to open surgical repair. Within the group of patients undergoing surgery, there was a 19% mortality rate. The data show a low observed mortality rate for rAAA presenting to the RQHR. The favorable outcome of the patients is not associated with preselection bias of patients transported long distances to specialist vascular care.
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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 | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.008 | 0.013 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| 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".