Unnecessary Head Computed Tomography Scans: A Level 1 Trauma Teaching Experience
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
The Canadian CT Head Rule attempts to standardize the practice of obtaining head computed tomography (CT) scans in patients with minor head injury. Previous research indicates 10 to 35 per cent of CT scans performed do not meet these guidelines. The purpose of this study was to review our use of CT scans in the evaluation of mild traumatic brain injury and to identify 1) unnecessary head CT scans (UHCT); 2) variables associated with UHCT; and 3) associated costs. Using a trauma registry, inclusion criteria were age older than 18 years, Glasgow Coma Scale of 15, and at least one head CT scan. UHCTs were those without head injury, loss of consciousness, amnesia, or neurologic complaint. The proportion of patients meeting the criteria for UHCT was 24.2 per cent. Univariate analyses revealed ages 41 to 64 years, drug use, vehicular injury, and surgery within 24 hours were associated with UHCT (all P < 0.05). UHCTs were associated with higher Injury Severity Scores (P = 0.008), ventilator days, and length of stay (all P < 0.05). An average cost of $1,413 per CT equals $149,778 in extra costs. This study suggests that current practices at our Level I trauma center result in UHCT. Further investigation into best practices would benefit our center by reducing costs and providing quality patient care.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| 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