Early (90‐day) mortality after radical radiotherapy for head and neck squamous cell carcinoma: A population‐based analysis
Bibliographic record
Abstract
BACKGROUND: A retrospective, population-based analysis of 90-day mortality in patients with squamous cell carcinoma of the head and neck treated with radiotherapy was performed to determine the early mortality rate and associated risk factors. METHODS: Data were abstracted for all consecutive patients with cancer of the head and neck treated from 1998 to 2014 at the BC Cancer Agency with curative intent radiotherapy (n = 5658). Logistic regression analysis was used to determine factors associated with early mortality. RESULTS: The median age at diagnosis was 63 years. The mortality rate at 90 days after starting radiotherapy (RT) was 3.6% (n = 203/5658). The cause of death was attributed to head and neck cancer for 81% of patients. Multivariate analysis demonstrated that increasing age, oral cavity subsite, and advanced T and N classification were associated with an increased risk of early mortality (p < .05). CONCLUSIONS: The risk of early mortality was 3.6%. Elderly patients with advanced T and N classification had the highest risk of early mortality.
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How this classification was reachedexpand
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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".