RAND Corporation, Behavioral and Policy Sciences, Santa Monica, CA.
RAND Corporation, Economics, Sociology, and Statistics, Santa Monica, CA.
J Acquir Immune Defic Syndr. 2020 Oct 1;85(2):189-194. doi: 10.1097/QAI.0000000000002433.
To determine how weekly text messages and small incentives impact HIV knowledge and frequency of HIV testing among Latinx sexual minority men (LSMM) and transgender women (LTGW).
Prospectively randomized participants into 2 intervention arms compared with a nonrandomized comparison group.
Bienestar, a primarily Latinx focused HIV service provider located across Los Angeles County.
SUBJECTS, PARTICIPANTS: Two hundred eighteen participants self-identifying as LSMM or LTGW, HIV negative, having regular mobile phone access, ≥18 years, and fluent in English or Spanish.
The "information only" (IO) group received text messages with HIV prevention information. The "information plus" (IP) group additionally could win incentives by answering weekly quiz questions correctly and testing for HIV once every 3 months. We followed participants for 12 months.
MAIN OUTCOME MEASURE(S): HIV knowledge and frequency of HIV testing.
We found no effect on HIV knowledge in the IO group but a statistically significant improvement in the IP group (79.2%-88.1%; P = 0.007). The frequency of HIV testing was higher in both intervention groups relative to the comparison group: On average, 22.0% of IO participants and 24.9% of IP participants tested at a Bienestar site within a given 3-month period, compared with 13.0% in the comparison group. This represents unadjusted relative risk ratios of 1.69 for the IO group (95% CI: 1.25 to 2.1; P < 0.01) and 1.91 for the IP group (95% CI: 1.51 to 2.31; P < 0.01), respectively.
This study demonstrates that a simple, low-cost intervention may help increase HIV testing frequency among LSMM and LTGW, 2 groups at high HIV risk.
确定每周发送短信和提供小额奖励对拉丁裔性少数男性（LSMM）和跨性别女性（LTGW）的艾滋病毒知识和艾滋病毒检测频率的影响。
前瞻性地将参与者随机分配到 2 个干预组，并与非随机对照组进行比较。
Bienestar，一家主要服务于拉丁裔人群的艾滋病毒服务提供商，遍布洛杉矶县。
受试者、参与者：218 名自我认同为 LSMM 或 LTGW、艾滋病毒阴性、有定期手机访问、≥18 岁且能流利使用英语或西班牙语的参与者。
“仅信息”（IO）组收到包含艾滋病毒预防信息的短信。“信息加激励”（IP）组还可以通过正确回答每周的测验问题并每 3 个月检测一次艾滋病毒来获得奖励。我们对参与者进行了 12 个月的随访。
艾滋病毒知识和艾滋病毒检测频率。
我们发现“仅信息”组的艾滋病毒知识没有变化，但“信息加激励”组有统计学意义上的改善（79.2%-88.1%；P=0.007）。与对照组相比，两个干预组的艾滋病毒检测频率都更高：在给定的 3 个月期间，平均有 22.0%的 IO 组参与者和 24.9%的 IP 组参与者在 Bienestar 检测点进行了检测，而对照组的比例为 13.0%。这分别代表 IO 组的未调整相对风险比为 1.69（95%CI：1.25 至 2.1；P<0.01）和 IP 组的 1.91（95%CI：1.51 至 2.31；P<0.01）。
这项研究表明，一种简单、低成本的干预措施可能有助于增加拉丁裔性少数男性和跨性别女性这两个艾滋病毒高风险群体的艾滋病毒检测频率。
