Abstract WP355: Intracerebral Hemorrhage Care in a Stroke Unit is Safe and Associated With Lower Costs
Bibliographic record
Abstract
Background: There is little data to support level of care decisions for lower risk intracerebral hemorrhage (ICH) patients. The addition of a dedicated stroke unit (SU) at our institution allowed for a comparison of such patients cared for in the intensive care unit (ICU) or SU. We hypothesized that SU care of select ICH patients would not change functional outcome, and result in reduced costs. Methods: Two retrospective cohorts of consecutive patients with small (<20 cc) supratentorial ICH and the absence of anticoagulation were enrolled. In the first study period from August 1, 2008 to February 1, 2011, patients were admitted to the neurological or medical ICU (historical control). In the second study period from August 1, 2012 to January 30, 2014, patients were admitted to a dedicated SU. Intubated patients, those requiring vasopressors, osmotic therapy, or ventriculostomy were excluded. Primary outcomes were discharge modified Rankin Score (mRS) and total hospital charges. Multivariate analyses were used for predicting mRS and early complications. Results: There were 104 patients included in the analysis (41 ICU, 63 SU). Mean age, gender and race did not differ significantly between groups. Mean ICH volume was 6cc in the SU group and 8cc in the ICU group (P>.05). Prior antiplatelet use, ICH location, and ICH score did not differ between groups. Intraventricular hemorrhage and hydrocephalus were more common in the ICU group (P<.001). Two SU patients transferred to the ICU for pneumonia and acute myocardial infarction. There were no significant differences in complications such as ICH expansion, use of osmotic therapy, seizures, or pneumonia. There was no difference in discharge mRS between groups (P>.05). Median hospital length of stay was 6 days in the ICU group and 3 days in SU group (P<.001). Median direct costs for the ICU group were $5,859 (IQR 4,782-9,733) and were $4,078 (IQR 2,861-6,865) for the SU group (P<.001). Unit of admission was not a significant predictor of early complication (P=.73) or discharge mRS (P=.43) in multivariate analysis. Conclusions: This preliminary retrospective study provides support for select low-risk ICH patients to be safely cared for in a lower intensity setting with potential for reducing costs.
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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 | 0.010 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.014 | 0.001 |
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".