Blood Alcohol and Breath Alcohol Comparisons using the Intox EC/IR II
Bibliographic record
Abstract
During Impaired Driving Investigations, peace officers can use a breath testing instrument to determine the concentration of alcohol in a person's blood to support a charge of operating a motor vehicle with a Blood Alcohol Concentration (BAC) in excess of 80 milligrams of alcohol in 100 millilitres of blood. The evidentiary instruments used for this purpose must be court-acceptable instruments, also known as Approved Instruments, which are named by Order of the Attorney General of Canada. One such instrument recently added to the Approved Breath Analysis Instruments Order (2009), the Intox EC/IR II, has been selected by many Canadian police agencies to replace aging instruments presently used. The purpose of this study was to look at the correlation between the BAC as determined from breath analysis on this recently approved instrument and the near simultaneous results from whole blood collection and analysis from volunteer drinking subjects. The results suggest that breath testing with the Intox EC/IR II underestimates the true BAC.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 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".