DRUG USE AMONG QUEBEC DRIVERS: THE 1999 ROADSIDE SURVEY
Bibliographic record
Abstract
As part of a major undertaking to establish the role of drugs in highway collisions, the Societe de l'assurance automobile du Quebec (SAAQ) conducted a roadside survey from August 9 to August 29, 1999 in order to determine drug use among Quebec drivers. Regardless of time of day, a BAC above the legal limit (.08) was found in 0.8% of the breath samples. When using the same time period (9 PM to 3 AM, Wednesday to Sunday) as in previous alcohol roadside surveys, BAC>.08 was found in 1.8% (+/- 0.5%) of breath samples in 1999 (n = 2724) which compares to 3.2% in 1991, 3.6% in 1986 and 5.9% in 1981. According to the toxicological analysis of the 2281 urine samples, drugs were found in the following proportions: cannabis (5.22%), benzodiazepines (3.66%), cocaine (1.09%), opiates (1.08%), barbiturates (0.35%), amphetamines (0.07%), PCP (0.03%). However, large variations are observed depending on the time of day, sex and age. For the covering abstract see ITRD E106992.
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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 | 0.003 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 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".