Figure 1

<p>Epidemic curve of false-positive OraQuick rapid HIV antibody test results, oral fluid, by Month and Lot, University of Minnesota study, July 2002 through August 2004.</p

Demographic characteristics and HIV risk behaviors of 2268 clients whose finger-stick whole blood and oral fluid specimens were tested with the OraQuick Advance rapid HIV test, by state—incidence study, February 2005 through May 2005.

<p>A/PI/AI/AN/Other, Asian/Pacific Islander/American Indian/Alaska Native/Other; IDU, injection drug user; MSM, men who have sex with men; STD, sexually transmitted diseases.</p>a<p>Risk behaviors are not mutually exclusive.</p

Demographic and risk characteristics of 382 clients who had a true-negative or false-positive oral fluid OraQuick Rapid HIV-1 Antibody Test result—University of Minnesota performance study, April 15, 2004 through August 31, 2004.

<p>OR, odds ratio; AOR, adjusted odds ratio; CI, confidence interval; A/PI/AI/AN/Other, Asian/Pacific Islander/American Indian/Alaska Native/Other; IDU, injection drug users; MSM, men who have sex with men; STD, sexually transmitted diseases.</p>a<p>Values in bold font represent P≤0.25; variables included in the logistic regression model (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0000185#s2" target="_blank">methods</a>).</p>b<p>Age was categorized into a dichotomous variable with 37 years as the cutoff as this was the median age of performance study clients during both July 1, 2002–April 14, 2004 and April 15, 2004–August 31, 2004.</p>c<p>Risk behaviors are not mutually exclusive.</p>*<p> <i>P</i><0.05</p

OraQuick Advance rapid HIV antibody test results for 2268 clients tested with oral fluid, Incidence Study, February 2005 to June 2005.

a<p>Test line intensity of test device compared to test line intensity of low-positive external control.</p