@article{ref1,
title="Does performing preplacement workplace hair drug testing influence US Department of Transportation random and postaccident urine drug test positivity rates?",
journal="Journal of addiction medicine",
year="2018",
author="Price, James W.",
volume="12",
number="2",
pages="163-166",
abstract="BACKGROUND: Does performing pre-employment hair drug testing subsequently affect the prevalence of positive random and postaccident urine drug tests? METHODS: This cross-sectional study was designed to evaluate the prevalence of positive postaccident and random workplace urine drug tests for companies that perform pre-employment hair and urine drug testing to companies that only perform pre-employment urine drug testing. <br><br>RESULTS: Fisher exact test of independence indicated no significant difference between pre-employment hair drug testing and overall US Department of Transportation random and postaccident urine drug test positivity rates. <br><br>CONCLUSIONS: The analysis failed to reject the null hypothesis, suggesting that pre-employment hair drug testing had no effect upon random and postaccident urine drug test positivity rates.<p /> <p>Language: en</p>",
language="en",
issn="1932-0620",
doi="10.1097/ADM.0000000000000384",
url="http://dx.doi.org/10.1097/ADM.0000000000000384"
}