Concordance of self-reported drug use and saliva drug tests in a sample of emergency department patients
The purpose of this study was to assess the concordance of self-reports of cannabis, cocaine and amphetamines usage, with a saliva point-of-collection drug test, the DrugWipe 5+, in an emergency department (ED) setting. Methods: A random sample of people admitted to either of two emergency departmen...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
2014
|
| Online Access: | http://hdl.handle.net/20.500.11937/19455 |
| _version_ | 1848750038709174272 |
|---|---|
| author | Macdonald, S. Cherpitel, C. Stockwell, Tim Martin, G. Ishiguro, S. Vallance, K. Brubacher, J. |
| author_facet | Macdonald, S. Cherpitel, C. Stockwell, Tim Martin, G. Ishiguro, S. Vallance, K. Brubacher, J. |
| author_sort | Macdonald, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The purpose of this study was to assess the concordance of self-reports of cannabis, cocaine and amphetamines usage, with a saliva point-of-collection drug test, the DrugWipe 5+, in an emergency department (ED) setting. Methods: A random sample of people admitted to either of two emergency departments at hospitals in British Columbia, Canada were asked to participate in an interview on their substance use and provide a saliva test for the detection of drugs. Analyses: Concordance of self-reports and drug tests were calculated. Prior to DrugWipe 5+, sensitivity and specificity estimates were compared against a gold standard of mass spectrometry and chromatography (MS/GC). This was used as a basis to assess the truthfulness of self-reports for each drug. Results: Of the 1584 patients approached, 1190 agreed to participate, which is a response rate of 75.1%. For cannabis, among those who acknowledged use, only 21.1% had a positive test and 2.1% of those who reported no use had a positive test. For cocaine and amphetamines respectively, 50.0% and 57.1% tested positive among those reporting use, while 2.1% and 1.3%, respectively, reported no use and tested positive. Self-reports of cannabis and amphetamines use appear more truthful than self-reports of cocaine use. |
| first_indexed | 2025-11-14T07:30:29Z |
| format | Journal Article |
| id | curtin-20.500.11937-19455 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:30:29Z |
| publishDate | 2014 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-194552018-03-29T09:06:21Z Concordance of self-reported drug use and saliva drug tests in a sample of emergency department patients Macdonald, S. Cherpitel, C. Stockwell, Tim Martin, G. Ishiguro, S. Vallance, K. Brubacher, J. The purpose of this study was to assess the concordance of self-reports of cannabis, cocaine and amphetamines usage, with a saliva point-of-collection drug test, the DrugWipe 5+, in an emergency department (ED) setting. Methods: A random sample of people admitted to either of two emergency departments at hospitals in British Columbia, Canada were asked to participate in an interview on their substance use and provide a saliva test for the detection of drugs. Analyses: Concordance of self-reports and drug tests were calculated. Prior to DrugWipe 5+, sensitivity and specificity estimates were compared against a gold standard of mass spectrometry and chromatography (MS/GC). This was used as a basis to assess the truthfulness of self-reports for each drug. Results: Of the 1584 patients approached, 1190 agreed to participate, which is a response rate of 75.1%. For cannabis, among those who acknowledged use, only 21.1% had a positive test and 2.1% of those who reported no use had a positive test. For cocaine and amphetamines respectively, 50.0% and 57.1% tested positive among those reporting use, while 2.1% and 1.3%, respectively, reported no use and tested positive. Self-reports of cannabis and amphetamines use appear more truthful than self-reports of cocaine use. 2014 Journal Article http://hdl.handle.net/20.500.11937/19455 10.3109/14659891.2012.760010 restricted |
| spellingShingle | Macdonald, S. Cherpitel, C. Stockwell, Tim Martin, G. Ishiguro, S. Vallance, K. Brubacher, J. Concordance of self-reported drug use and saliva drug tests in a sample of emergency department patients |
| title | Concordance of self-reported drug use and saliva drug tests in a sample of emergency department patients |
| title_full | Concordance of self-reported drug use and saliva drug tests in a sample of emergency department patients |
| title_fullStr | Concordance of self-reported drug use and saliva drug tests in a sample of emergency department patients |
| title_full_unstemmed | Concordance of self-reported drug use and saliva drug tests in a sample of emergency department patients |
| title_short | Concordance of self-reported drug use and saliva drug tests in a sample of emergency department patients |
| title_sort | concordance of self-reported drug use and saliva drug tests in a sample of emergency department patients |
| url | http://hdl.handle.net/20.500.11937/19455 |