Department of Health Services, UCLA School of Public Health, 650 Charles E. Young Drive S., Los Angeles, CA 90095, USA.
AIDS Behav. 2012 Oct;16(7):1926-33. doi: 10.1007/s10461-012-0243-9.
Using a subsample of respondents to the 2005 Los Angeles County health survey, we examined the relationship between perceptions of the seriousness of HIV/AIDS in one's community and HIV testing. We constructed a propensity score-based matched sample of three groups with differing perceptions of the seriousness of HIV in their community: high perceived seriousness, low perceived seriousness, and uncertain about seriousness. We compared HIV testing behavior in the three groups before and after using propensity score matching to control for selection on observed covariates. The unadjusted comparison showed a testing rate of 30.2 % among those perceiving high seriousness, 11.4 percentage points higher than the 18.8 % testing rate among those perceiving low seriousness. After propensity score matching, the adjusted testing difference was 7.0 percentage points (p < 0.05). Those uncertain about the seriousness of HIV did not differ significantly in their testing behavior from those perceiving high seriousness.
利用 2005 年洛杉矶县健康调查的受访者子样本，我们研究了人们对社区中艾滋病病毒/艾滋病严重性的看法与艾滋病病毒检测之间的关系。我们构建了一个基于倾向评分的匹配样本，包括三组对社区中艾滋病病毒严重性有不同看法的人：高度重视、低度重视和不确定。我们比较了在使用倾向评分匹配控制观察协变量选择后，三组的艾滋病病毒检测行为。未经调整的比较显示，认为严重性高的人的检测率为 30.2%，比认为严重性低的人的 18.8%的检测率高出 11.4 个百分点。经过倾向评分匹配后，调整后的检测差异为 7.0 个百分点（p<0.05）。那些不确定艾滋病严重性的人与认为严重性高的人在检测行为上没有显著差异。
