Objective: To describe clinically important differences in the charact
eristics of subjects using three distinct HIV counseling and testing s
ettings: scheduled confidential, scheduled anonymous, and confidential
walk-in. Design: An HIV risk-assessment questionnaire was given to in
dividuals prior to receiving HIV-antibody testing and counseling. Meth
ods: Demographic and behavioral data was analyzed for each of the thre
e counseling and testing settings. Results: Walk-in clinic subjects re
ported fewer high-risk sexual activities and other risk behaviors than
subjects from the other two testing settings. They also included more
individuals who were health-care workers and victims of sexual assaul
t. Conclusions: The three distinct HIV counseling and testing settings
each attracted populations with varying degrees of potential for HIV
transmission. The results emphasize the importance of maintaining mult
iple approaches to HIV counseling and testing in order to reach increa
singly diverse at-risk populations.