The Burden of Work Disability Associated with Mild Traumatic Brain Injury in Ontario Compensated Workers: A Prospective Cohort Study
Bibliographic record
Abstract
Objectives: To estimate the incidence of compensated claims involving mild traumatic brain injury among On- tario workers covered by the Workplace Safety & Insurance Board (WSIB) and to describe the number and duration of days off work related to incident claims using workers compensation administrative data. Methods: We used a population-based, historical cohort of 111,800 injured workers aged 20 or older with a claim to the Ontario Workers' Safety and Insurance Board in 1998. We estimated the incidence as the rate of new mild traumatic brain injury in the Ontario working population eligible for compensation by the WSIB. We described the number and duration of disability days using an episodic and cumulative analysis of time on benefits over a two-year period (1997-98) deter- mined from administrative data. Results: The annual incidence was 1.5 (95% CI: 1.3, 1.7) per 10,000 full-time equivalents. Eighty-seven percent of claim- ants had a single episode of benefits with median duration of 11 days (95% CI: 10, 12). Fifty percent were off benefits af- ter 17 days and 75% by 72 days. Conclusions: Mild traumatic brain injury is disabling in the working population. Most work disability is short-term, but a small proportion of claimants become chronically disabled and unable to work.
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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 | 0.006 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.006 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.003 |
| Insufficient payload (model declined to judge) | 0.006 | 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".