TABLE D-1 Case-Control Studies



Sample Size (n)

*Hagan et al., 1995

Examines the association between use of syringe exchange and hepatitis B and C in IDUs.

Cases: 28 IDUs with acute hepatitis B; 20 IDUs with acute hepatitis C.

Controls: IDUs with no markers of exposure to hepatitis B or C (n=38 and 26, respectively).

*Patrick et al., 1997

Identifies determinants of HIV seroconversion among IDUs during a period of rising prevalence in Vancouver despite the prevalence of NSE and outreach.

Cases: IDUs with a new positive HIV test after January 1, 1994, and a negative test within the prior 18 months (n=89).

Controls: required 2 negative tests during the same period (n=192).

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