Duplicate Breath Alcohol Testing: Should the Statutory wait in Canada of 'at least 15 Minutes' Between Tests be Changed?
| Autor: | J.G. Wigmore, C.J. House, R.M. Langille |
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| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | Canadian Society of Forensic Science Journal. 38:1-8 |
| ISSN: | 2332-1660 0008-5030 |
| Popis: | A one-year retrospective study was conducted of 2,759 duplicate Intoxilyzer® 5000C test results in the City of Toronto during 1995 with a statutory wait of “at least fifteen minutes” between tests. The time between tests ranged from 19 to 73 minutes (median = 22 minutes). The absolute difference between the first and second breath tests ranged from 0 to 0.042 g/210 L (median 0.007 g/210 L). The distribution of these differences was not normal (KS = 0.1566, skewness = −0.1143). The differences between the truncated first and second tests were not within the recommended 0.02 g/210 L in 7.5% of the paired data. The second test was ≥ 0.01 g/210 L less than the first breath test in 35% of the cases (n=981) but was ≥ 0.01 g/210 L greater than the first breath test in only 7% (n=203) using truncated results. The observed skewness in this distribution is likely due to the elimination of alcohol that occurred during the time between tests. Following the adjustment of the second test to account for the mean... |
| Databáze: | OpenAIRE |
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