Central America 2013: TRaC study measuring sexual behaviors among People Living with HIV in Belize, Guatemala, El Salvador, Nicaragua, Costa Rica and Panama. Round 1.

1. GOAL OF THE TRaC STUDY The goal of this study is to collect baseline data on the prevalence of condom use and the opportunity, ability and motivation to adopt healthier behaviors among people living with HIV/AIDS (PLHA) in Central America. 2. RESEARCH OBJECTIVES 2.1 This study test the hypothesis that exposure to PSI Com-prevention program reduces risk behaviors and increases enforcing/supportive environment for PLWHA in 6 central Latin American countries. Main outcomes: Condom use at last sex; number of sex partners; social support; internalized stigma; ART adherence; and self rated physical and mental health. Treatment variables: exposure to PSI intervention as measured by a three categorical variable: (a) PLHA who completed the com-prevention cycle (participation in at least 3 interpersonal communication activities (IPC), one biomedical component (STIs test and/or antiretroviral referral), and one complimentary component (attendance to any legal/violence prevention/anti-discrimination service); (b) PLHA who participated in , but did not complete the cycle; (c) PLHA who did not participat e in any component of the com-prevention program. Control variables: socio-economic status, study sites, type of respondents (recruited through peers or clinics) and whichever variables that may determine exposure to interventions? Some of the main outcomes can also be control variables for other main outcomes. 2.2 Additionally, this study will provide the level of in key behavioral indicators (condom use at last sex and consistent condom use) among PLHA 2.3 And will help identifying which opportunity, ability and motivation constructs are significantly associated to safer behavior (condom use at last sex and consistent condom use)1. TRaC研究目标 本研究旨在收集中美洲艾滋病毒/艾滋病感染者（People Living with HIV/AIDS, 简称PLHA）的安全套使用流行情况，以及其采纳健康行为的机会、能力与动机的基线数据。 2. 研究目标 2.1 本研究将检验如下假设：在6个中美洲国家中，参与PSI艾滋病综合预防项目可降低高危行为发生率，并为PLHA营造更具支持性与约束性的环境。主要结局指标包括：末次性行为时的安全套使用情况、性伴侣数量、社会支持水平、内在污名化程度、抗逆转录病毒治疗（Antiretroviral Therapy, 简称ART）依从性，以及自评躯体与心理健康状况。 干预暴露变量：采用三分类变量衡量对PSI干预项目的暴露程度：(a) 完成综合预防全流程的PLHA：即完成至少3项人际沟通活动（Interpersonal Communication, 简称IPC）、1项生物医学环节（性传播感染检测和/或抗逆转录病毒治疗转诊），以及1项补充环节（参与任意法律/暴力预防/反歧视服务）；(b) 参与但未完成全流程的PLHA；(c) 未参与该综合预防项目任何环节的PLHA。 控制变量包括：社会经济地位、研究地点、受访者招募方式（通过同伴招募或诊所招募），以及所有可能影响干预暴露的变量。部分主要结局指标亦可作为其他主要结局指标的控制变量。 2.2 此外，本研究将明确PLHA在关键行为指标（末次性行为时的安全套使用情况及持续安全套使用情况）方面的水平。 2.3 同时，本研究将识别出与安全行为（末次性行为时的安全套使用及持续安全套使用）显著相关的机会、能力与动机相关构念。