In this section, self-report and urinalysis results are presented separately for each of the nine DUMA sites. In 2011–12, these sites included Adelaide, Bankstown, Brisbane, Darwin, Footscray, East Perth, Kings Cross, Parramatta and Southport. Data collection at the Kings Cross and Parramatta sites alternate on a quarterly basis; data was collected at Kings Cross in quarters one and three and at Parramatta in quarters two and four in both years.
The Tables for each site show drug use and offending behaviour, sociodemographics, drug treatment and drug attribution data. Drug use data from urinalysis is displayed by gender, drug type, age, most serious offence and other drug-related behaviour. Results are also presented on self-reported drug use, focusing on gender, drug type and age.
When interpreting the site-based results presented in these sections, the following points should be considered:
- Males are overrepresented in the detainee samples. However, proportions are consistent with the population from which the samples were derived, with police processing fewer female than male detainees.
- In some cases, column percentages may not total 100 due to rounding or because multiple responses were permitted across a range of response options.
- Sample sizes vary across analysis; detainees were only excluded from analysis in which data were missing.
- The any drug category refers to detainees who tested positive, via urinalysis, to any of the following drugs—methamphetamine, benzodiazepines, cannabis, cocaine or heroin.
- Multiple drug use refers to those detainees who tested positive, via urinalysis, to two or more of the following drugs—methamphetamine, benzodiazepines, cannabis, cocaine or heroin.
- Throughout the 14 years of DUMA’s operation, a number of changes have been made to both the methodology and annual reporting. These changes have been made to improve the reliability and accuracy of the data and to ensure the relevance of the DUMA data to key stakeholders. This report and the trend data presented within it represent the current methodology and item format adopted by the DUMA program. Direct comparisons with earlier reports should only be undertaken with this in mind.