The effectiveness of substance abuse treatment: development of a brief questionnaire

Background Practitioners need brief instruments to monitor outcomes in both treatment of drugs and alcohol addiction because they are useful to guide decision making in a short time.Objectives This study aims to develop a brief questionnaire, based on Client Evaluation of Self and Treatment, to evaluate the treatment effectiveness in drug and alcohol addiction treatment settings.Methods A cross-sectional study using a convenience sample (N = 608) recruited from Division for Intervention on Addictive Behaviours and Dependencies (DICAD – ARS North).Results The results show a new four-factor solution that accounted for 54.4% of the total variance and that provides the best fit to the data (c2/df = 1.72, CFI = .94, GFI = .91, RMSEA = .048 [.040-.057]; prmsea = .623). It also revealed a high internal consistency (a = .82). It was found a significant negative correlation (r = - .52, p < .01) between the final version of the instrument and a self report measure of psychopathology symptoms.Discussion This brief questionnaire, with good psychometric properties, can be useful to provide a viable and rapid feedback of treatment outcomes. Further studies should be performed to continue the evaluation of the reliability of this measure.

背景 成瘾治疗领域的临床从业者亟需简短测评工具，以监测药物成瘾与酒精成瘾的治疗结局，因其可在短时间内为临床决策提供有效依据。
研究目的 本研究以《来访者自我与治疗评估量表》（Client Evaluation of Self and Treatment）为基础，开发一款简短问卷，用于评估药物成瘾与酒精成瘾治疗场景中的治疗有效性。
研究方法 本研究为横断面研究，采用便利抽样法，从成瘾行为与依赖干预部门（Division for Intervention on Addictive Behaviours and Dependencies, DICAD – ARS North）招募了608名研究对象（N=608）。
研究结果 结果显示，新提取的四因子模型可解释总变异量的54.4%，且对数据具备最优拟合度（χ²/df=1.72，CFI=0.94，GFI=0.91，RMSEA=0.048 [0.040~0.057]；prmsea=0.623）。该量表同时具备良好的内部一致性信度（克朗巴赫α系数=0.82）。此外，本研究发现该量表最终版本与精神病理症状自评工具间存在显著负相关（r=-0.52，p<0.01）。
讨论 这款具备良好心理测量学属性的简短问卷，可切实为治疗结局提供可行且快速的反馈。未来需开展进一步研究，持续评估该测评工具的信度。