High Risk Population Surveys

1
High Risk Population Surveys

• Cameron Duff, Clifton Chow, Warren Michelow,
  Andrew Ivsins, Tim Stockwell

2
BC Monitoring Methodology

• Two BC sites Vancouver and Victoria.
• Three risk populations were identified for
  study
• Club users
• Adult IDU
• Street Youth
• Data collected in two waves
• 40 participants from each of the IDU and Club
  cohorts were interviewed in early 2007.
• An additional 50 interviews for each of the three
  pops were conducted between Nov 2007 and March
  2008.
• These confidential, face-to-face interviews
  lasted between 50-80 minutes.

3
BC Monitoring Methodology

• Researchers in each site relied on local
  professional networks to facilitate recruitment.
• Recruitment sites for the adult IDUs and street
  youth included needle exchanges, youth outreach
  services, community health clinics youth
  community centres.
• Participants for the club cohort were recruited
  through community postering, newspaper internet
  ads, and club email lists.
• N458 interviews conducted so far.

4
Overall prevalence
5
Club Cohort
6
Street Youth Cohort
7
IDU Cohort
8
Club Cohort Vancouver
9
Club Cohort Victoria
10
Street Youth Cohort Vancouver
11
Street Youth Cohort Victoria
12
IDU Cohort Vancouver
13
IDU Cohort Victoria
14
Harms due to Alcohol Last year
15
Harms due to Alcohol Last year
16
Harms due to Drugs Last year
17
Harms due to Drugs Last year
18
Additional drugs being tracked

• Tobacco
• Amphetamine
• LSD
• Magic Mushrooms
• Salvia
• PCP
• GHB
• Ketamine
• Amyl Nitrate
• Nitrous Oxide
• Solvents/Glue

• Speedballs
• Methadone
• Talwin/Ritalin
• Dilaudid
• Morphine/MS Contin
• Oxycodone/Percocet
• Codeine/T3's/T4's
• Benzodiazepines
• Viagra
• Ritalin
• Steroids

19
Summary Key Findings

• Very drug involved populations in each site
  high rates of associated harms.
• Interestingly, highest rates of crystal meth use
  reported in adult IDUs
• 31 of Adult IDUs reported past week CM use
• 7.4 clubbers reported past week CM use 4.4 of
  youth populations.
• Higher rates of past year cocaine injection among
  adult IDUs in Victoria (90) Vancouver (70).
• Higher rates of past month CM and heroin
  injection among adult IDUs in Van.
• CM (59 vs. 33 VIC)
• Heroin (71 vs 63 Vic)

20
Statistical analysis of drug use (last 30 days N
451)

• Controlling for city, risk group, age, gender,
  survey wave
• More crack use in 2007/8 v 2006/7
• More cocaine in Victoria
• More amphetamine, crystal meth, heroin and
  mushrooms in Vancouver
• No gender effects, older more likely to use crack
  and crystal meth
• Greatest range of use among adult IDUs
• More heroin and ecstasy among Club Drug cohort

21
Other key findings

• 23 of clubbers report driving within 1 hour of
  having 2 or more drinks in last year.
• Average of times this occurred 31
• Rates were much lower for IDU and Street Youth
  (7 and 10 respectively)
• Driving within 2 hours of using marijuana was
  reported by 27 of Club users and 22 of Street
  Youth.
• Average of times
• Club 59
• Youth 12

22

• This is only the briefest survey of available
  data.
• Much more is now available on the study website.
• This PP will be posted there shortly for
  download.
• QUESTIONS? cameron.duff_at_vch.ca
• Thanks to the full study team and to Clifton Chow
  for preparing these slides.