Background Intimate partner violence (IPV) and unhealthy alcohol use are common yet often unaddressed public health problems in low- and middle-income countries. In a randomized trial, we found that the common elements treatment approach (CETA), a multi-problem, flexible, transdiagnostic intervention, was effective in reducing IPV and unhealthy alcohol use among couples in Zambia at a 12-month post-baseline assessment. In this follow-up study, we investigated whether treatment effects were sustained among CETA participants at 24-months post-baseline. Methods Participants were heterosexual couples in Zambia in which the woman reported IPV perpetrated by the male partner and in which the male had hazardous alcohol use. Couples were randomized to CETA or treatment as usual plus safety checks. Measures were the Severity of Violence Against Women Scale (SVAWS) and the Alcohol Use Disorders Identification Test (AUDIT). The trial was stopped early upon recommendation by the trial's DSMB due to CETA's effectiveness following the 12-month assessment. Control participants exited the study and were offered CETA. This brief report presents data from an additional follow-up assessment conducted among original CETA participants at a 24-month visit. Results There were no meaningful changes in SVAWS or AUDIT scores between 12- and 24-months. The within-group treatment effect for SVAWS from baseline to 24-months was d = 1.37 (p < 0.0001) and AUDIT was d = 0.85 (p < 0.0001). Conclusions The lack of change in levels of IPV and unhealthy alcohol use between the 12- and 24-month post-baseline timepoints suggests that treatment gains were sustained among participants who received CETA for at least two years from intervention commencement.

中文翻译：

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共同要素治疗方法（CETA）在赞比亚减少亲密伴侣暴力和不健康饮酒的两年治疗效果


背景 在低收入和中等收入国家，亲密伴侣暴力（IPV）和不健康饮酒是常见但往往未得到解决的公共卫生问题。在一项随机试验中，我们发现，在 12 个月的基线后评估中，共同要素治疗方法 (CETA) 是一种多问题、灵活、跨诊断的干预措施，可有效减少赞比亚夫妇的 IPV 和不健康饮酒。在这项后续研究中，我们调查了 CETA 参与者在基线后 24 个月时的治疗效果是否持续。方法 参与者是赞比亚的异性恋夫妇，其中女性报告了男性伴侣犯下的 IPV，而男性则有危险的饮酒行为。夫妇被随机分配接受 CETA 或照常治疗加上安全检查。衡量标准是针对妇女的暴力严重程度量表（SVAWS）和酒精使用障碍识别测试（AUDIT）。由于 CETA 经过 12 个月评估后的有效性，该试验根据试验 DSMB 的建议提前停止。对照参与者退出研究并获得 CETA。这份简短的报告提供了在最初的 CETA 参与者为期 24 个月的访问中进行的额外后续评估的数据。结果 12 个月和 24 个月期间 SVAWS 或 AUDIT 评分没有发生有意义的变化。 SVAWS 从基线到 24 个月的组内治疗效果为 d = 1.37 (p < 0.0001)，AUDIT 为 d = 0.85 (p < 0.0001)。结论 在基线后 12 个月和 24 个月的时间点之间，IPV 和不健康饮酒水平没有变化，这表明在干预开始后至少两年内接受 CETA 的参与者中，治疗效果得以持续。