Road Traffic Injury During the COVID-19 Pandemic: Cured or a Continued Threat?
Bibliographic record
Abstract
Road traffic injury, one of the leading causes of preventable morbidity and mortality in Canada, declined substantially as an indirect outcome of the first wave of the COVID-19 pandemic. Public health policies encouraging people to ‘stay at home’ and ‘practice physical distancing’ precipitated shifts in vehicle volumes and speed, transportation mode, and collision rates. Toronto data from January to June 2020 showed a decrease in road transportation, and a simultaneous decrease in road traffic collisions. However, reduced traffic volumes also led to increased vehicle speeds which can result in an increase in injury severity involving pedestrians and cyclists. As the pandemic progresses, an emphasis on safe, active transportation and equitable distribution of street infrastructure throughout the city is essential. A public health approach to road safety includes implementation of evidence-based road safety infrastructure enabled by access to timely transportation data to evaluate changes made.
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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 | 0.007 | 0.026 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.003 | 0.005 |
| Scholarly communication | 0.008 | 0.013 |
| Open science | 0.002 | 0.005 |
| Research integrity | 0.006 | 0.009 |
| Insufficient payload (model declined to judge) | 0.013 | 0.002 |
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".