HIV awarenessa among HIV-infected men who have sex with men– National HIV Behavioral Surveillance System, 20 Cities, U.S., 2008 and 2011.

aHIV aware defined as MSM with a confirmed HIV-positive test result who reported a previous HIV-positive test result during NHBS interview.bConfidence interval.cAdjusted prevalence ratio; Model includes: all variables shown & their interactions with year, venue type & interaction with year, outness, & sexual identity as fixed effects. Referent = 2008.dIncludes MSM reporting American Indian or Alaska Native, Asian, Native Hawaiian or Pacific Islander, other race, or multiple races.

a. HIV知晓者定义为：经实验室检测确认为HIV阳性的男男性行为者（Men who Have Sex with Men, MSM），且在全国艾滋病行为监测（National HIV Behavioral Surveillance, NHBS）访谈中自述曾获得过HIV阳性检测结果。
b. 置信区间（Confidence Interval）。
c. 校正患病率比；模型包含以下固定效应：所有已列出的变量、变量与年份的交互项、场所类型及其与年份的交互项、出柜状态以及性身份，参照组为2008年。
d. 涵盖自述为美洲印第安人或阿拉斯加原住民、亚裔、夏威夷原住民或太平洋岛民、其他种族或多种族的男男性行为者（MSM）。