| New Zealand's breath and blood alcohol testing programs: further data analysis and forensic implications. | |
| | |
MedLine Citation:
|
PMID: 18367354 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Paired blood and breath alcohol concentrations (BAC, in g/dL, and BrAC, in g/210 L), were determined for 11,837 drivers apprehended by the New Zealand Police. For each driver, duplicate BAC measurements were made using headspace gas chromatography and duplicate BrAC measurements were made with either Intoxilyzer 5000, Seres 679T or Seres 679ENZ Ethylometre infrared analysers. The variability of differences between duplicate results is described in detail, as well as the variability of differences between the paired BrAC and BAC results. The mean delay between breath and blood sampling was 0.73 h, ranging from 0.17 to 3.1 8h. BAC values at the time of breath testing were estimated by adjusting BAC results using an assumed blood alcohol clearance rate. The paired BrAC and time-adjusted BAC results were analysed with the aim of estimating the proportion of false-positive BrAC results, using the time-adjusted BAC results as references. When BAC results were not time-adjusted, the false-positive rate (BrAC>BAC) was 31.3% but after time-adjustment using 0.019 g/dL/h as the blood alcohol clearance rate, the false-positive rate was only 2.8%. However, harmful false-positives (defined as cases where BrAC>0.1 g/210L, while BAC< or =0.1g/dL) occurred at a rate of only 0.14%. When the lower of duplicate breath test results were used as the evidential results instead of the means, the harmful false-positive rate dropped to 0.04%. |
| | |
Authors:
|
A R Stowell; A R Gainsford; R G Gullberg |
Related Documents
:
|
8452194 - Anticipated stimulant and sedative effects of alcohol vary with dosage and limb of the ... 10874694 - Histopathological examination of chemo-sympathectomy in cats. 16539214 - Alcohol distribution in different postmortem body fluids. 6537224 - Interindividual variations in the disposition and metabolism of ethanol in healthy men. 18007724 - Real-time phase-resolved functional optical coherence tomography by use of optical hilb... 799824 - A comparison of the role of kinins and serotonin in endotoxin induced fever and trypano... |
Publication Detail:
|
Type: Journal Article Date: 2008-03-26 |
Journal Detail:
|
Title: Forensic science international Volume: 178 ISSN: 1872-6283 ISO Abbreviation: Forensic Sci. Int. Publication Date: 2008 Jul |
Date Detail:
|
Created Date: 2008-06-02 Completed Date: 2008-07-10 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7902034 Medline TA: Forensic Sci Int Country: Ireland |
Other Details:
|
Languages: eng Pagination: 83-92 Citation Subset: IM |
Affiliation:
|
Environmental Science and Research Ltd (ESR), P.O. Box 50348, Porirua, New Zealand. allan.stowell@esr.cri.nz |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Automobile Driving
/
legislation & jurisprudence* Breath Tests / instrumentation* Central Nervous System Depressants / analysis* Chromatography, Gas Ethanol / analysis* False Positive Reactions Forensic Medicine Humans Linear Models New Zealand Substance Abuse Detection / instrumentation* |
| Chemical | |
Reg. No./Substance:
|
0/Central Nervous System Depressants; 64-17-5/Ethanol |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: The probative character of Forensic Handwriting Examiners' identification and elimination opinions o...
Next Document: Passport examination by a confocal-type laser profile microscope.