Predictors of positivity for hepatitis B and the derivation of a selective screening rule in a Canadian sexually transmitted diseases clinic1Presented in part at the 10th meeting of the International Society for Sexually Transmitted Diseases Research, Helsinki, Finland, August 29–September 1, 1993 and the 61st Meeting of the Canadian Association of Clinical Microbiology and Infectious Diseases, November 21–25, 1993, Vancouver, BC.1

OBJECTIVES: To determine the prevalence of hepatitis B surface antibody (anti-HBs) and antigenemia (HBsAg), the risk factors for seropositivity and the effectiveness of a selective serologic screening rule among sexually transmitted diseases (STD) clinic attendees. STUDY DESIGN: Clients in the Hamilton STD Clinic were surveyed from October 1992 to July 1993 on sociodemographic, past medical, and behavioural data, were tested for several STDs …