The UK’s Initial Operational Response (IOR) decontamination protocol requires that chemically contaminated casualties remove contaminated clothing (disrobe) and then apply water or absorbent materials to skin. The health‐protective efficacy of the protocol is predicated on casualties quickly accepting both the need to act and the fact that this protocol is an effective action. The aim of this study was to test whether adherence is affected by the presentation of information by first responders about the severity and likelihood of contamination (Threat) and the health‐protective efficacy of IOR procedures (efficacy). A double‐blind randomized controlled experiment (N = 132) with a 3x2 independent measures design (registration number: ISRCTN17886859) was used to assess the effects of threat and efficacy on behavioural expectations during a simulated chemical incident, presented as an immersive video. Results indicated that addressing the threat of contamination made participants more likely to expect themselves to disrobe were the situation real. Emphasizing the efficacy of protective action made participants more likely to expect themselves to apply absorbent materials to skin and had an indirect positive effect on disrobing expectations, mediated by efficacy perceptions. We recommend that first responders explicitly address the threat of contamination and efficacy of decontamination when communicating with chemically contaminated casualties.

中文翻译：

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威胁和功效消息对沉浸式模拟化学事故中遵守去污协议的预期依从性的影响：随机对照实验

英国的《初始作战响应》（IOR）消毒规程要求受化学污染的人员要脱去被污染的衣服（衣服），然后将水或吸收性材料涂在皮肤上。该协议的健康保护功效取决于伤亡人数，该人员迅速接受了采取行动的必要性以及该协议是有效行动的事实。这项研究的目的是测试第一反应者提供的有关污染的严重程度和可能性（威胁）以及IOR程序的健康保护功效（功效）的信息是否会影响依从性。一项双盲随机对照实验（N = 132），采用3x2独立措施设计（注册号：ISRCTN17886859），用于评估模拟化学事故中威胁和功效对行为期望的影响，以沉浸式视频形式呈现。结果表明，解决污染的威胁使参与者更可能期望自己成为真实的情况。强调保护作用的功效使参与者更有可能期望自己将吸收性材料应用到皮肤上，并且对无效的期望产生间接的积极影响，这是由功效知觉所介导的。我们建议急救人员在与化学污染的伤员进行沟通时，明确应对污染的威胁和净化的功效。